Every program im using on my pc (vista 64bit) runs fine. And a good majority are 32 bit (xfire, winamp, firefox etc...) The CPU will simply run it in 32bit mode if there is no 64bit support for it. So you have nothing to worry about. Although Id do a quick google search to check if those programs work fine in vista (should do).
Just because you have a 64bit OS doesnt mean you HAVE to use 64bit programs. If they are 32 bit, your CPU will simply run them as a 32bit program.
There were 2 reasons why I went 64bit. 1) Its the future and 2) graphic and video editing.
Originally Posted by SuxoR
Don't mean to hijack the thread but it's kinda related
What if you have the 32-bit system and get more ram, how would you upgrade to the 64-bit version?
You would have to buy the upgrade version of the OS which is 64 bit. (make sure you have a 64bit CPU first)