Ask your coworker to open the CDR files and export them as windows metafiles or GIFs or something like that. Then, you can go to Word and hit Insert-Picture from file, and select that file. If they export them as bitmaps, they should be viewable in Paint. If exported as GIFs, JPGs and the like, they should be viewable in MS Photo Editor. Anything but CDRs--they'll only be usable on a PC that has Coreldraw installed--that is, to my knowledge.