When I Copy something from a Yahoo message and try to Paste it into an existing Word document, Word crashes. Any ideas? Suggestions? All the support desks (MicroSoft, Dell and Yahoo) tell me it's one of the other's issue.

Try saving it to a new document rather than the existing document then copy the information from the existing document to the new document. In the end you will have the same combined document you were attempting. There may be a compatibility issue with the way you saved the original document that is causing it to crash.

If this doesn't work I have found that if I forward the message back to me something happens in that email process that gets rid of bugs.

Good luck

Make sure you are only selecting the text and not other parts of the page. But if that's still the case, paste into Notepad first, then copy and paste again into Word.