Guy is cheating me on ebay?

I paid him $6.00 for an item. He says he will not give it to me unless i pay him or he'll start an unpaid item case I SENT HIM A PHOTO PROVING I PAID HIM, he doesn't believe me. I'm still new on ebay so I'm not sure what to do. I want something to make him give me a FULL refund or give me the item RIGHT NOW. They are the email and pass for an account (Minecraft) so he can send them to my e-mail please help me.

Added (1). I have told him to talk with me quietly to resolve this. He says he hasn't received ANY payment from paypal, does paypal take time to deliver the transaction?

Added (2). I have told him to talk with me quietly to resolve this. He says he hasn't received ANY payment from paypal, does paypal take time to deliver the transaction?

Why does this pop up when I try opening minecraft?

I tried downloading minecraft from its website but when I click minecraft to try to open it up it pops up "Minecraft" is an application downloaded from the Internet. Are you sure you want to open it?" What do I do to make it work and why does this pop up? I need help as soon as possible!

Added (1). I have a macbook pro

Sound issues? Youtube issues?

Basically, it seems when I have skype or steam open my sound goes crackly or it doesn't work at all. Youtube videos refuse to load sometimes and so do itunes songs. I don't want to have to exit my steam and my skype, the problem originated with minecraft, where when playing the game my sound got crackly. It's gotten worse and it's very annoying. My speakers also do not work for unknown reasons, so maybe this is connected?
With the youtube videos, it either refuses to load followed by an error screen or it plays with no sound. Please give short and simple answers as I'm not technically well spoken.

Was the i5-4440 a good choice for gaming?

So i recently bought myself a new gaming computer and got a lot of help from some of my friends. However all of them told me to get the i5-4440 instead of an i7, because apperantly the i5 does the job when it comes to gaming, so i did exactly that, but now i'm wondering if i did the right choice or not. And i should upgrade to an i7 anytime soon or not.

my specs are:
gtx 760
intel i5-4440
8 gb of ram

for the moment i'm playing ac 4 and minecraft, but i'm considering to buy battlefield 4, will the i5 do the job or not?

What is feed the beast in minecraft?

I've been watching syndicate's 'the minecraft project' recently and I was wondering how his minecraft is so good and then he said in episode 323 that it isn't minecraft, it's 'feed the beast'? What does this mean, and how do I get it.

Is this why he has that cool minimap and that list of recipes that come up?

I would really like to know, cheers.

How to teleport in minecraft?

I have faced a dilemma. I first started off right next to this diamond mine in minecraft and set a small hut up. I then kept all my diamonds in there and made a nice home. I then did the same things at other mining hotspots in the minecraft world and gradually built up quite a large pile of loot. I now have made a massive house by the desert with a portal to the nether and to the twilight forrest.

I now want a teleportation device to walk into, so I won't have to try and find my old huts with all my loot (and farms) and die trying. This would really help if you could tell me how to do this, it would make my game a whole lot better.
Cheers.

Minecraft Plugin Coding Help? - 1

Okay, so I'm making a Minecraft plugin, and I have 2 lines of code with sender.Sendmessage
My question is, how do I make a delay between the two messages? I want it to send one message, then maybe 1-2 seconds later, send the other. (Keep in mind I'm new to coding)

Building a Computer, need parts, choose some for me?

I'm have a computer that my dad gave me, and i have removed all the parts, checked them all, put it back together and it works perfectly. But first let me give you some backround first.

First of all, i'm 13, second of all this a spare computer built in 2009, for my dads lawyer firm, its is no ways a gaming computer execpt for maybe the ram. Here are the specs:

CPU: Intel Core 2quad Q8200
Motherboard: Pegatron Benicia
Harddrive: 596 gb
Operating System: Windows 7 Ultimate (i'm keeping this, but might get linux)
Graphics Card: Intel g33/g31 Express Chipset Family (No longer sold).
RAM: 8gb of RAM.

Thats it, What i will need:
Most likely a new motherboard and cpu, a good graphics card, i'm gonna throw in 8gb more of ram, gonna keep the hardrive, its good enough, might buy a SSD. I will also need a case that will fit it, not overly big, and not to small, preferly cool looking.

Its needs to run Battlefield 4, Crysis 3 Minecraft, Farcry 3 and other games with NO LAG, on medium to standard quality settings. Keep the price tag as small as possible and use AMAZON! Thanks

Added (1). I built on with these specs
http://www.amazon.com/...IHL2WA8FM/

What i need is a LONG RANGE Wi-Fi chip that can fit this computer

Will Minecraft work on Windows 8?

I just created a Mojang account and tried to play the demo version of minecraft. Everything came up except the game window. I tried refreshing it but nothing happened. Can anyone help me? I tried earlier to play the classic minecraft, but It kept telling me some bullcrap about activeX or something and would not let me play it.

Added (1). I really don't have a problem with windows 8, its just that one of the reasons I bought a new computer was to play minecraft on it (my old one wouldn't work). So if I can't play minecraft, I will be horrified!

C++ is there any 3D or 2D game programming tutorials?

With c++ is there any 3D game programming tutorials to make a game like minecraft or a mmorpg and is there any 2D game tutorials like a platformer or something similar to pokemon and if there's can it be a video tutorial and i would prefer multiplayer tutorials please and i don't won't to use anything like unity to make it just pure c++