64bit

i just got a computer with an AMD Turion 64 bit processor, and all of a sudden alot of my favorite programs don't work. i can only assume it is because they have compatibility problems with this new 64bit proc.

for example, when i install/try to run ISOBUSTER, i get an "invalid floating point operation" error. i also get this error when i run pretty much any installer.

what can i do to stop getting this error?

I have BSD installed, but i need to use windows for work, so i end up using windows 24/7.

Why the fuck would the company who made my PC ship a 64 bit processor without a 64bit OS? This fucking sucks. But you're saying if i install windowsx64, my problems will go away? Will i then have compatibility problems with 32bit applications?