Running another database within a vBulletin page

[Amenadiel]

is the second database running in mysql? It seems to me you have two databases on one mysql server but ¿are the connection strings the same? ¿Do you know if vbulletin's DB user has access to the other DB?

I ask this because once you include global (as in any vb based page) you have the connection already worked out, and if the user has privileges over the second database it might be just a matter of adding dbname before the table query.

Perhaps you just need to rewrite the queries in order for the integration to work.