ok, it seems as though i've been hit by the MSI k7T-Pro2A problem others have had... basically it's worked fine for 9 months and now it doesn't. So i have to get a new motherboard... but since i bought my k7t-pro2A, t-bird 1.2ghz cpu and 512mb PC133 ram, the Athlon XP DDR, Via KT266A, and fairly inexpensive DDR ram has been released. Here's my problem... I'm getting a KT266A motherboard, i just don't know which one yet... and once i do, how much performance would i be sacrificing keeping my old t-bird and PC133 ram vs. buying an Athlon XP (probably 1600+) and 512mb PC2100 DDR ram?