[newbie] Graphical User Interfaces for X

[Sharma, Anoop]

Hello All   I am completly new to Linux and just managed to install Mandrake 7.1 on my home PC dual booting with NT. At the mo using a boot disk.   My question is what is the X windows, KDE and Gnome?????     When I type start X I used to get a pretty interface either KDE or Gnome. Now all I get is a dos emulation of windows, I think its called TVM. What is TVM?     Also how do I know if the graphical user interface is KDE or Gnome as when I type StartX KDE or StartX Gnome I get the same look desktop.     ANy help will be greatly appreciated.     regards   Anoop