Outlook 2000 & e-mail enabled programs

I have recently installed Outlook 2000 on a Win98 machine previously running
Outlook Express. The install went fine but now everytime I start Outlook 2000 I
get this message: A recently installed program may cause Microsoft Office or
other e-mail-enabled programs to function improperly. Outlook can resolve this
conflict without affecting the program that originally caused the problem. Do
you want Outlook to resolve this problem?

When I answer yes to this Windows needs to restart in order to effect the repair.
After restart, nothing seems to happen and when I run Outlook 2000 again, I get
the same message. Any help with this will be greatly appreceiated.

Thanks.