I see you have lots of answers and free programs listed. rar is just another type of zip file. Once you download something it should all (zip and rar) work like you are used to. Good luck.
Linda, use the link that is provided below - or try just right clicking on it and doing the unzip like you normally would and see if it will open - you just never know - it might. *4U
Here is a site for a free program so that you can download rar - it works great and does not cost you.