Prince is right, one more gb would be perfect for your setup. But, make sure the new memory matches your old memory in specs or you could slow down your system. One more thing, is your old memory a 1 gig or 2 fives?? I&#39;ve read it&#39;s ok to mix the memory(1 stick of 1gig and 2 sticks of fives), and I&#39;ve read it&#39;s not the best way to go. If you&#39;re planning on keeping this computer for another 2 or 3 years, I would buy the 2 gigs and replace the old memory. I did just this last year with my system. It didn&#39;t make a big difference with CS, but it did make improvements in all other aspects with my computer. I hope this helped...  <img src="http://www.clanlod.net/ipb/style_emoticons/<#EMO_DIR#>/cheeky-smiley-005.gif" style="vertical-align:middle" emoid=":cheeky-smiley-005:" border="0" alt="cheeky-smiley-005.gif" />