If you install microsoft office it screwed with your OE settings, Try this:
Change the default email program to "microsoft outlook" and reboot
then hange it back to OE and reboot.
FYI, Webmail is in VISTA not XP
If you install microsoft office it screwed with your OE settings,
What you're saying is that installing MS Office would change the default email program from OE to Outlook. I think that depends on how the user doing the installation of Office responds to certain options during installation. But, yes, if Office was installed and the default email client got changed, it could be changed back using your procedure. However, we no indication so far that Office was installed.
FYI, Webmail is in VISTA not XP
No, webmail simply means accessing an email account via web browser instead of an email client (OE, Outlook, etc.). For, the Yahoo Mail service is webmail. Hotmail and Google's Gmail are also commonly accessed via web browser and, therefore, are webmail. Obviously, the OS has nothing to do with this.