Oooh, this game is soo darn zany!
And I AM going to solve it without a walk-through. Well, that is what I normally say, when I start out playing an adventure.
If you are looking for a walk-through that tries not to spoil your entire gaming experience, try universal hints system.
The link for this game is
http://www.uhs-hints.com/uhsweb/hints/discwrld/1.php