Pretty sure no is the answer to whether or not it will work with Vista x64, but to be sure you'll want to download a program called CPU-Z. I forget where it is exactly when you run this program, but there will be a listing of CPU features like MMX, SSE, SSE2, etc. If you see EMT64 in that list, you should be good to go. If that's not listed, you're stuck with the 32-bit Vista unless you want to upgrade your CPU to a Core 2 Duo or Quad.
You could also try looking up the CPU info on Intel's website or some place like Wikipedia. Normally I try to avoid Wikipedia, or even recommending it, but so long as the subject matter isn't the least bit controversial, it's fairly reliable.
well i was using windows XP 32bit, and my computer hdd has died out, and im gonna have to load up a new OS
Id like to upgrade to vista 64, but im not sure if i have a computer that can handle 64 bit.
wondering if someone that knows about this stuff could help me. My computer is like this --
Dell Dimension 9100 series.
2.8 ghz Pentinum D 820 Smithfield
socket 775 LGA
intels i945 chipset
2gb ddr2 ram pc2-4300(266mhz)
Sb 24 Live sound card
gefore 8600 grafix card
thanks for the help