Entourage & Microsoft Word X & Quotation Mark Problem


Had problem with my Inbox not displaying correctly so had to rebuild Entourage database the other day. Afterwards, I sent a couple of emails in which I copied and pasted Word X documents. When my recipients opened their email, all the quotation marks and apostrophes had been changed into something resembling footnotes w/1's, 2's, & 3's. Never had this problem before. How can I correct/eliminate this problem?