[juven14]

It is time consuming, because you have to learn the code from vbulletin and 68 Classifieds, then you have to create pairs of code. This is because you can change the password in two locations so you must create code for each location to update the other. It can be done, but when you factor in upgrades/changes for both systems it might get rather bothersome to keep updated.

I think it should be kept to the essentials: registration, login, logout, and the update of passwords. Mine is setup for registration, login, and logout, but I haven't yet got around to making the code for password changes.