[mythtv-users] Installing MythTV on a system with a pre-existing MySQL database

[mythtv at daniflexer.com]

[I am a MythTV newbie so apologies if I am missing anything obvious.  
Ilooked through the archives but could not find an answer to this  
query.]

I am installing MythTV on a system (Ubuntu 10.10) that is already  
hosting a Bitnami Mediawiki stack which includes an instance of MySQL,  
currently only used for the Mediawiki.

I am considering whether to run an instance of MySQL dedicated to  
MythTV in addition to the one used for Mediawiki or to use the same  
MySQL for both the Mediawiki stack and MythTV.

Questions:

1. What would be considered the best-practice?
2. Other than adding a mythtv user to the existing MySQL database and  
running mysql -u root < /usr/share/mythtv/sql/mc.sql, is there  
anything else I need to add to the existing MySQL to prepare it for  
MythTV?

Thanks!
Dani