looking to upgrade memory, currently have 512mb ram on a p4 3ghz. mostly use the computer for home office stuff, but wife does a lot of picture slideshows and dvd video work. looking for suggestions on the best way to go to upgrade the memory. thinking of going for 2gig if possible. thinking of going with ddr-pc3200. What is the best brands to look for and any other ratings to look for when buying ram. any help is appreciated.