How do I run a 32 bit program on windows 7 64bit OS

[kawasakiZ1000]

I have a 32 bit program that used to run fine on windows XP (32bit) however no matter what I do to run it through the compatibility system I keep getting the same message ask supplier for 64 bit program, the manual ( windows 7) tells me there is a compatibility for doing just this but it won't work, anyone have any help on this would be much appreciated?

 

[LMiller7]

What is the application? What is the exact message in the manual? There is no universal procedure that will allow all 32 bit programs to run in a 64 bit OS.

 

[Alejandro85]

Most programs run right away in x64 systems, but few might have problems.
If your program uses drivers (a rare occurrence) then you absolutely need a native 64 bits version.
THe most likely cause, however, it's that the program is actually a 16 bits one, whose compatibility completely has been removed in 64 bits Windows.