hi, i currently have xp pro on my pc and my system specs are as followings, amd 64 3800+ X2, kingston 1gb ddr2(553mhz, 512x2), and sapphire x1300xt with 256mb ddr2 ram. I found the new releasing version(z) of windows to be funny, because my pc is 64bit capble and there are like 6 versions of vista out there. which one should i choose, the 32bits, or the newer 64bits? will i be able to install games designed in 32bits and dx9 environment on a 64bits operating system?? thanks in advance.