What programs are you having a problem with?
Have you checked the manufacturers' websites for possible updates/patches so their software works in Win7?
Did you install 32 / 64-bit version of Win7? What edition of Win7 is it - Home/Pro/other?
Have you tried installing AND running them in Compatibility Mode for Vista click here?
You can cross-check the problem programs with the official Win7 compatibility list click here. The list is not necessarily conclusive, or up-to-date. There may be other ways to run them, like Compatibility Mode above or XP Mode (latter needs certain criteria to function). G