Marcia,
This has nothing to do with Excel causing anything. First of all, if you and the other person (who can print fine) are using the same printer then there may be a bad cable between you and the printer. If you have your own printer, maybe reloading or updating the drivers would solve this, or reinstalling the printer itself might fix it. As a last resort you could reinstall Excel, but I'd explore other options before doing this; it's very time consuming.
Regardless, your best bet it (if you have it available) call tech support or refer to your user manuals. Most have a troubleshooting section.
Hope this helped,
Cory