Would it be worth it to upgrade this old computer?

When I was a bit younger, i got this old computer for Christmas.

http://www.amazon.com/...001B1CRFI/

Despite its 1gb ram, obsolete operating system and old parts, it is actually a really good computer.

I read somewhere that almost any desktop can be upgraded with additional RAM to dramatically increase the system's performance.

These are a few questions i would like to be answered if possible.

1.) I was planning on upgrading as many things as i can in this computer. If i upgrade the RAM alone, would i be able to turn this old computer into a low grade gaming computer to play games like Minecraft?

2.) I also read somewhere that installing a lighter weight operating system would as well improve the performance of this computer. Is this true? And would Windows Vista or Windows 7 be lighter?

3.) Could you give me a link to some RAM sticks that would be compatible with this computer?

You can add 1 more GB RAM. If you load Vista ( which is no longer available legally, the only copies around are pirated and will eventually lock the machine, or are infected with spyware, it will seriously slow down the machine. So would 7. These both need much more ram to run correctly. There's unlikely to e anything else you can upgrade, from experience E-machines always were fitted with the minimum cost motherboard that would support that processor. So you would probably need to fit a new motherboard to upgrade the CPu otr Graphics card. You will almost certainly need a new power supply for that, and would need to totally install a new operating system. Cheaper to buy a new machine.

Yes, you can upgrade it firstly change your ram if speed is not exceed than change your mother board according to processor because latest processor works with latest motherboards and work well…

Of course you can update your old computer, you can update its RAM, motherboard, and also operating system. I think this would be work great. Try this.

Have a look into a Linux OS.
Some versions run fine on low-end hardware.
Here's Ubuntu: http://releases.ubuntu.com/lucid/
Make sure to get the "AMD" flavor.

Use the "dual-boot" as described here http://www.psychocats.net/ubuntu/installing and you can keep whatever Windows OS you have, in tact.
"Live" Linux is another option, so you can just try it to see if it will work.