SQL Access with Rev CGI

[Bridger Maxwell]

Hey,
  I have just got a Rev CGI set up on my Dreamhost server, and I would like
it to access my SQL database.  I have been searching around the list
archive, and it seems like it is possible, but I  can't figure it out.  Is
there a driver I need to download?  Where can I get that driver?  Whenever I
execute revdb_connect, it returns "revdberr,invalid database type."  I am
running the linux engine version 2.6.6.

  TTFN
    Bridger Maxwell