Aren't there programs that will strip a EXE to ASM... then you can analyze the ASM if you can read it... just do a lil' google search.

*ttp://www.vbcodesource.com/downloads/Vb6decompiler.zip

[EDIT JMI: Rather than being "sorry for the double post", why don't you use the tools available and hit the "EDIT" Button and "Edit" your posts to add forgotten information, or something you discover a few minutes later? Otherwise it looks like spamming and you know where that leads.
And the REQUEST you posted in this Forum has been DELETED, how about you pay attention to THAT Rule as well.]