Can I SEAMLESSLY incorporate vBulletin into my white label social networking software
 

Ok I am currently setting up a social network with a white label software platform.

But it has a TERRIBLE forum platform.

Can I SEAMLESSLY incorporate a vBulletin into my site so that there is addtional sign-in required?

So once they sign into my main site* they wont be able to tell any difference and wont be required to log in twice - which people wouldnt want to put up with.

Thanks.