Dmitry,
I noticed you having a frustrating experience with InstallShield. You might want to consider looking at Inno Setup instead. This is a free setup builder utility that in my opinion is a better product than InstallShield, Wise, and Setup Factory (I've used them all). Inno Setup is my product of choice for VFP setups.
There's sample Inno Setup scripts for VFP on
www.fox.wikis.com.
The main site for Inno Setup is
www.innosetup.com.
Malcolm