SMS 2003 SP2 is now available - download here:

http://www.microsoft.com/smserver/evaluation/2003/sp2.mspx

Among other things, you can now run SMS 2003 on top of SQL 2005.

Download the new MOM resource kit update found here:

http://www.microsoft.com/mom/downloads/2005/reskit/default.mspx

The updates includes many new and enhanced tools...