Capistrano, beta deployment and different database?

Hi,

I’ve modified my deploy.rb to deploy a beta version of my site (trunk,
rather than a tag) if I supply the BETA environment variable. It uses a
different mongrel config and a different deploy_to. I’d also like to use
a
seperate MySQL database, yet as far as I know, we’re stuck with the
test,
development and production databases. I don’t want development mode
(don’t
want the reloads) so something like appname_beta_production would be
good.
Any idea how I can stay in production mode but override the database?

Cheers
Ian