Grid Control and Target:Database page

Greetings,
Boy am I stumped. Probably 'cause I haven't found any documentation to
help me in the reams of Oracle docs...

Here's the deal. I have a database instance that was running with a
named listener when I installed Grid Control. I've since renamed the
listener, but the database target page insists on associating the
database with the listener that the database was using when Grid was
installed.

Can anyone shed some light on how to get Grid to connect the database
with the new listener?

This is a Fedora 8 installation with Grid 10.1.0.4 (yeah, I know - I
need to patch it...).

regards,
pg