sure you can one way is REDEFINE it in the class browser other is to manually edit the VCX : e.g. make a copy of your VCX and VCT (just in case (s)) use vcxname.vcx change the class and classloc fields to point at the new base class use compile classlib vcxname Arnon > >I have a form which was subclassed from a base class and now I want to >change this form to be subclassed from another base class? >Can I do this? > >