[newbie] Choosing different desktops

[WallerRaknakce]

Dear Anyone, As was suggested I did reinstall Linux Mandrake 7 because I 
could never get the graphical login to comeup. Now I have it! I am thrilled. 
However, I cannot figure out how to get into the other window desktops such 
as xfce, enlightenment, etc. The choice is there but I can only get into KDE 
or Gnome. Even trying as root did not help.

 Also, how would I creat accounts with the other desktops so I can go in as a 
user? Thank you very much. Marcia