>We are having trouble installing VFP7 lib in WINXP.
>Error: The operating system is not adequate for running VFP 7 library.
>Please help...

When you created the setup, you checked specific OSs that you wanted to allow the install on. Either go back and check "Any OS", or upgrade to the full version of InstallShield Express, which was released after XP, instead of before, like VFP7/ISXLE.