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?