Definately. What you need to do is:

1. Determine what will be the master user database. Most likely this will be vbulletin as it will be probably easier to integrate Links SQL -> vbulletin then the other way around.

2. Assuming it's Links SQL, you need to edit the Authenticate module and add code for things like:

- adding a user
- deleting a user
- checking password
- authenticate sessions

So for check password, you would add a query that would check vbulletin's user table and return 1 if it is a valid password, 0 otherwise.

It does require a little programming, but is all in one place and fairly easy to do.

Cheers,

Alex

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