How install BACKTRACK 5 in Virtual Machine 
1. Firstly you will need to download VMPLAYER <cause it is free>
http://downloads.vmware.com/d/info/desktop_end_user_computing/vmware_player/4_0

2.Then you have to download the BT5 from this link :-http://www.backtrack-linux.org/downloads/

3.Use the following setting as shown :-
4. NOW DO WHAT I DO IN THIS VIDEO:-