If it didn't work with Vista at all (even with compatability mode etc.) then it won't work in 7 unfortunately.
If you have Windows 7 Proffesional, Enterprise or Ultimate you can use Windows XP mode (Download Windows XP Mode
) and run it through that.
If you have Basic or Home Premium and you have an old copy of 2000/XP kicking about you could try using Virtual Box (http://www.virtualbox.org/wiki/Downloads)which
accomplishes the same thing as XP Mode.
Both these solutions run an older version of Windows Virtually within Windows 7.