How about

msdb.dbo.log_shipping_monitor_primary?

Works fine. 

In fact, at one point I had the SQL7, SQL2000 and SQL2005 tools installed on the same box since I needed to administer SQL6.5, 7, 2000 and 2005...

You need to have the services running when you start the install, but it needs to stop them to update them.  Since you've lost any performance gain from cached data/queries,...