Believer,
Just found some useful information for you. Here is where you need to go. Microsoft TechNet Troubleshooting .dll help.
There are the two I found to be most likely to be the issue.
Let me know if this helps.
Thanks,
Kelly

FILE INFORMATION:
Name: msoe.dll
Description: Outlook Express
Version: 5.50.4522.1200
DLLSelfRegister: Yes
PRODUCTS CONTAINING THIS VERSION:
PRODUCT SIZE MOD DATE CAB/IEXPRESS RELATIVE PATH
Windows 2000 SP2 1,174,288 5/4/2001 \i386
FILE INFORMATION:
Name: msoe.dll
Description: Outlook Express
Version: 6.0.2600.0
DLLSelfRegister: Yes
PRODUCTS CONTAINING THIS VERSION:
PRODUCT SIZE MOD DATE CAB/IEXPRESS RELATIVE PATH
Internet Explorer 6.0 1,174,528 8/17/2001 mailnews.cab
Microsoft Visual Studio .NET (2002) Enterprise Architect 1,174,528 8/17/2001 mailnews.cab \wcu\ie60
Microsoft Visual Studio .NET (2002) Enterprise Developer 1,174,528 8/17/2001 mailnews.cab \wcu\ie60
Microsoft Visual Studio .NET (2002) Professional 1,174,528 8/17/2001 mailnews.cab \wcu\ie60
Windows XP Home 2002 1,174,528 8/17/2001 \i386
Windows XP Professional 2002 1,174,528 8/17/2001 \i386
Kelly
Senior Systems Engineer