Having read the stickies I am looking for a PSU recommendation. I would also like to upgrade my RAM and am seeking a recommendation for that as well. Newegg will be my source for both unless I'm directed elsewhere. Currently I have the stock 2 sticks of 256MB and have 2 slots open. 4GB is the max. capacity for this unit. The sticky I read leaves me wondering how far I should go with this. I am led to believe that DDR-333 (PC2700) would work for me. I've only taken my case off once to vacuum out the dust bunnies. Never the less I believe I can manage to do this much on my own. This is my first computer (3 years old now) and I've yet to approach it's capabilities. I am still a novice. Thanks.