I'm not in Mandrake just now, so I can't give you the clickety-clicks needed. Can you find the Mandrake Control Center (I think that's what it's called, if you try one center and it isn't in there. try another center.
To start and stop, these are the commands (but you have to configure it to get it to do what you want before these will really do anything useful):
Perhaps these links may help
# Mandrake links
Mandrake home page
Easy urpmi config for Mandrake
Easy software management: Red Carpet
You didn't install the developmental packages? As root, command: