Im looking to group forms together in the Project explorer window in the vb6 ide. In vs2005+ there is an option to add a folder(filter) in the solution explorer and put files in to group similar items.
Does anyone know the equivalent in the old vb6 ide or a plugin that can give me such functionality?

I don't think so... but with that said, you can group them by their names... i.e.

formInvOrd
formInvRec
formInvTrans

BUT, if you do find a way, I would surely like to know. As for tools that you might find handy, check out MZTools...

Good Luck