Download [link=http://www.rarlab.com/download.htm]WinRAR[/link], it's free and will work great. It will tell you it's only good for 30 day (or something like that), but it will work forever. It's a great program for unzipping files

Once you download WinRAR and install it, just double click on your file and RAR will open it, then just look on the top of the WinRAR page and you will see "Extract To", just click on that and then send the file to the right folder in Reflex. Once you do it once, you find it very easy to do. That WinRAR is a great program.