You will need WinRar or similar to extract .rar files. If the RAR file has a video file within it, you will then be able to play the video file.
If you need information about Windows 7, visit the WIndows 7 forum here;
Or Microsoft's introduction to Windows 7 here; http://www.microsoft.com/windows/windows-7/
sir, my o.s is windows vista. i am not able to play video files which have .rar extention. inform where can i download it. also can i upgrade from vista to windows 7. plz inform the difference between them,how to upgrade.can i upgrade myself .
relating to version tracker i want to purchase for me(single user).till now i have not recd any information regarding to this issue, about purchase details etc.inform the same.