Integrating userbase from vbulletin to other systems

[Simplicity]

Hi there,

I am in the process of developing a site that uses vB, Subdreamer, ProSupport and various other scripts.

I want to share the user database from vBulletin with all the other systems (Subdreamer already integrates). ProSupport allows for integration with vBulletin by modifying the userlogin.class

How exactly do I do this and would this process cover integration with other systems?

Any help would be greatly appreciated