FVWM Question

[Raphael Brunner <lilo-@gmx.ch>]

Dear Users

I tryed the fvwm-crystal window-manager and it looks very nice and
usefull. But, I want to modify the menue-bar and customise other
programs. But, I don't know where. I changed a lot of things in
/usr/share/fvwm-crystal/Applications/... but, it seems like it don't
hear on things there. 
I googled a lot, but can't find a howto or something helpfull. 

Has anyone a good howto or a good start-doc where is what and how are
common ways to change settings like the menues?

I read also something about perl-scripts, but, I don't know anything
about other windowmanagers like fvwm*

Thanks a lot for your help.
Raphael