Iam planning to buy a new ram for my pc...currently iam using 256...My pc config is- P4 2.8ghz, 80gb hdd,winsdows xp, intel 845 card....me planning to buy One gb card...ma budget is 2000..for which brand should i go for..and which ram card will run on pc...should i go for DDR1 OR DDR2.PLS Suggest