Hrmm 512DDR is pretty good...

I mean obviously adding ram can never hurt..

But whats the real problem here one might ask..

Spyware eating up resources perhaps?

But to answer your question.. first check the specs on your motherboard and see what the MAX RAM capabilities are on your board.

Then add the second chip accordingly.

Specs on motherboard say it can take up to 2Gb of RAM. shouldn't be any spyware on, i just want the more ram to make newer games like HL2 look pretty and battlefield2 run well.

I would suggest getting a 1Gig stick.... BF 2 is a HUGE program......

More RAM will NOT make games look "pretty". It wouldnt be a bad idea to add some but will only make loading faster.

To make games look more "pretty", you would need another video card. What video card do you have right now?

A 128Mg GeForce Fx5700Le, by pretty i ment tsome of the nicer video options which when i turn them on the frame rate drops rather a lot when lots of things start to happen.

An FX5700LE is not really all that powerful in terms of the needs of modern games. More RAM will certainly assist with BF2, which is about the first game for which more than 1Gb of RAM is recommended. Most users feel that 2Gb is really required for decent performance.

I'd be considering adding a 1Gb module of PC2700 or PC3200 to the rig, but you need to be mindful that your 5700LE really only performs at about the capability of an FX5200. The 'LE' means that it is a cut-down model. I'm sorry to tell you so, but I'm afraid that cutting corners with the cost of display cards really doesn't pay!

As belama stated, RAM doesn't really play a part in this unless your hard drive starts thrashing in the middle of your game. The video card and to a lesser extent your CPU play the most important roles in "eye candy".

more RAM does allow you to get the most out of your card tho.... it speeds the game up (to a certain point)

No, not as such. It does speed up loading and prevent swapping to the hard drive, but doesn't help your video card that much. If it runs out of onboard memory, then it will swap out to the system RAM. However, this is far slower, in terms of both latency and transfer speeds. If this starts to occur, then you probably want to lower graphics detail or look at a new video card.