Newb Qst on AUTOCAD

[temps]

dads not home (he is the one who uses it).. want to install autocad.. gives me 3 options graphX and workshop and workshop EX

do i want to install all of them or do i only need 1..

Thanks.. i know its a newb question.. just don't want to wait for my dad to come home

[ntn4502]

this isnt autocad.org