Running a 32-bit program on Windows 7 64-bit, and what is the big difference?

Most 32 bit programs will run Windows 7 64 without any problems. In fact you’d be hard pushed to notice any differences at all.

However there are some programs that won’t work at all. Hardware drivers for example need to be specifically written for 64 bit OS, similarly iTunes needs a 64 bit version probably because it contains the drivers to run iPods etc.

From looking at the website the prgram your interested in works on the file structure of windows which probably differs between the 32 and 64 bit versions quite a bit. With that in mind I would guess that this program won’t work at all on a 64 bit system.

As per above poster, you can emulate most any 32-bit program seamlessly. The difference is 64-bit OS will support more RAM, so chances are the program will make use of it if needed.