[GreyingJay]

For something like a button you can often get away with using Word or Paint because (a) button designs should be simple, and (b) buttons are so small.

For the longer term, I would try to get away from using Paint and Word for graphic design. Even PowerPoint would work better since PowerPoint is a vector based program. We've done some quick-and-dirty desktop publishing using PowerPoint to lay out brochures and signage in place of more suitable tools like InDesign or Illustrator.

As others have said, there are good free tools available. Try to get your team used to working with vector graphics and logos. It will help you a lot when it comes time to print banners and other signage.