Word 2000 “send to” Problems

I have a pc with Office 2000 Pro on it.
We have an Exchange 5.5 server.
Many other PC’s are working fine.

On this pc when I have finished a word document and wish to email it to an internal colleage it doesn’t work. I hit the “send to; Mail Recipient” but the Exchange/Outlook address book is not available.

Outlook 2000 is functioning fine…so yes I know I can save my Word doc and send it as an attachment out of Outlook…I don’t want to. I want it to work right…like everyone elses!Contacts in Outlook is set to be used as an address book.

What’s Up? Thanks.