I have a M90 w/ a T7600 cpu,  4G of ram, 320G hard drive, and FX3500 video card.

I run WinXP 32bit now with no problems.

I am thinking about upgrading to Vista Ultimate 64bit w/ sp1.

Will my system run well with Vista Ultimate 64bit? Should I just install Vista Ultimate 32bit?

All of my applications now are 32bit (Autodesk 3dsMAX, Autodesk Combustion, Autodesk Toxik, Sony Vegas, etc)..

Thanks

-Matthew