Ivan,

In your second exe's startup program do all of the SET CLASSLIBs with the IN syntax before you run any forms.;

SET CALSSLIB TO MYForms IN First.exe ADDITIVE
SET CALSSLIB TO MyControls IN First.exe ADDITIVE

Personally, I would ship the VCX/VCT files separately from the exes and then just update the class lib that changed. If you are concerned about source code being available, you can blank out the Methods field in the VCX before you distribute it (do this to a copy because once it is done any attempt to edit the class will remove all of the code for that class).