Is it possible for me to upgrade my graphic card on Optiplex GX620 SSF?

My specs are

Intel Pentium D CPU 3.00GHz 2.99GHZ
RAM 2.00GB
Intel 82945g chipset family. I don't know if that needed

What i found is that upgrading my card to AMD Radeon HD 6570 or 5450 is way better and it will let me play my basic games like Garry's Mod, Minecraft and Dead 4 life 2

does that mean i need to upgrade my CPU or no?

My power supply is 275 wat - do i have to upgrade this?

i just want to upgrade so i can play my favorite games

please help me here D: i'm clueless

my desktop is Dell small factor (GX620)

Rust or DayZ? Which is better?

Hi. I've been struggling for what to get. Rust or DayZ standalone, i had Arma 2 and Arma 2 combined operation and also dayz mod but it never really worked so i never played Dayz. Rust seems cool and one of my best friends have it so maybe we could play together. Well say your opinion and cons and pros. Both games look really interesting but i never played other survival games than minecraft. Usually i play Team Fortress 2 or Counter Strike: Global Offensive.

Minecraft Not Enough Items

So basically I'm using about twenty 1.6.4 mods and all of them work fine except for Not Enough Items. None of the mods I'm using conflict--I know this because the mods I'm using came from a larger modpack and they all worked fine together.

I have Code Chicken Core installed with it, to make it run, but nothing.
Any ideas?

Added (1). Deleted META-inf.
Still not working:[

Liquid xp isn't either!

Added (2). [quote name='CaerMaster' timestamp='1392254447' post='28904052']
You haven't said a single thing about what versions they are. Are they all up to date? I'm using the current NEI release in 1.6.4 along with almost 90 other mods, and it works fine.
[/quote]

I have versions
NotEnoughItems 1.6.1.5
CodeChickenCore 0.9.0.6

The new versions link is down, so I don't know if these are what I need, but my friend is using these two and they are fine for him.

What is wrong with my Asus computer?

Ok it's more like my dad's computer. Yesterday I was using it to play minecraft and I tried to install the mob talker mod and ended up installing something called PalTalk. I closed PalTalk and gave up trying to install the mod. Then this morning when my dad was using it, when he typed in his password it said welcome for a split second and went black and said No Signal. It did this no matter how many times we did, and we were confused. I'm afraid to tell my dad that I tried to download something on his computer, because that might be the reason te computers like this. He has a lot of important files, and he's gonna give me a beating if he knew I had something to do with it.

How do I fix it?!

And sorry I can't tell you the model cause I don't remember.

How to install Galacticraft mod for minecraft?

I'm new to minecraft mods, I really want to play this one. I've gotten as far as installing minecraft forge but i can't get the mod into the mod file in the minecraft page. I'm using 1.6.4 and all the files i need are for 1.6.4.
The files are Galacticraft 1.6.4 and Micdoodle core 1.6.4 and are both Jar

Maybe I need to use Winrar? I don't know how to though. I DON't know what I'm doing wrong, please help

Why won't my technic launcher for minecraft not work?

I was using the technic platform mod pack launcher to use minecraft mods for a while until now when i start up the launcher the logo flashes on my screen then nothing happens. What's wrong and how do i fix it?

(Deleting it and redownloading doesn't seem to help)

Does this minecraft mod exist?

Hey I'm looking for a minecraft mod that allows you to fill your inventory from chests faster instead of shift clicking.

Basically, I have a enderman grinder and the enderpearls go into the chests. They get stacked into 16, and I was wondering if there's a mod where I can take all the stacks of enderpearls from the chests into my inventory with one click. It gets really annoying having to do shift-click for 54 stacks, especially since I have dozens of double chests of ender pearls.

How to use feed the beast in minecraft?

I downloaded the feed the beast mod launcher and I created a profile, but every time I click on Launch button, it says "invalid username or password". Why does it tell me that? How do I use it correctly and how do I install/use the mods?