Outlook Express is causing an error in MLANG.dll

Whenever I start Outlook Express, an error prompt comes up stating, "msimn has caused an error in mlang.dll."

There is no detail button for further information on the problem.  Outlook Express automatically shuts down, due to this.  I'm running Windows ME & have IE6, so I'm up to date.  I have also tried using system restore and that hasn't solved the issue either.

I also tried using the regsvr32.exe, b/c several knowledge bases I have searched suggest that the problem dll (mlang.dll) is in correlation with the state of this dll, but I dont think I'm doing it right.

In the run field I input..."rgsvr32/u mlang.dll," b/c that is what the articles for errors of a similar nature suggest that I do, but I still get an error..."Windows cannot find 'regsvr32/u.'  You may have typed the name incorrectly in the Run dialog, or another program cannot find a system file.  To search for a file, click the Start button, and then click Search."

I can find the particular file, but I am unable to determine whether it is working properly in conjunction with OE b/c I cannot get past the first step or so of the "fix" 

Any suggestions, comments, or help would be appreciated.