SQL2K Enterprise Manager startup problem (mmc.exe error)

I have been wondering what is wrong on my enterprise manager for a week, until I found this link this morning. After a upgrading some of my system component recently, my enterprise manager stops working immediately after I start up, a mmc.exe error.
here is the solution I copied from Tim's blog:

Select Start - Run.

At the Open prompt enter: mmc

Click OK

Select File - Add/Remove Snap-in...

Click Add...

Select Microsoft SQL Enterprise Manager

Click Add, then Close

Click Ok to return to the mmc.

Select File - Save As...

Delete or rename the original (offending) file out the way.

Save the new msc file as C:\Program Files\Microsoft SQL Server\80\Tools\BINN\SQL Server Enterprise Manager.MSC

 

It works for me. 

http://geekswithblogs.net/timh/archive/2005/08/09/49716.aspx