Now that MOSS is officially supported on SQL Server 2008, you might be looking for information on how to upgrade to SQL Server 2008.  Below are some useful links that may assist;

Upgrading to SQL Server 2008

http://msdn.microsoft.com/en-us/library/bb677622.aspx

How to: Upgrade to SQL Server 2008 (Setup)

http://msdn.microsoft.com/en-us/library/ms144267.aspx

Using Upgrade Advisor to Prepare for Upgrades

http://msdn.microsoft.com/en-us/library/ms144256.aspx