The Paint program, a descendent of the Windows Paintbrush tool that has not gained significant features in all its days has a replacement. Allow me to introduce you to a freeware/donationware tool that is sure to please and dead simple to use, Paint.net.
The tool is wonderful, handy and fills a few gaps between the less-than-adequate features of Microsoft Paint, and a pricey product that is for professional graphics and web building.
Please have a look at their site, for the common user, download and install a non-Beta version. If you're courageous and can accept the risk, go for the version 3.0 Beta and enjoy some additional features.