As I said, I really hate to give
out solutions, so I'll give you one more chance to reconsider. Certainly
you clicked on this link by mistake! Please just try a little longer to
solve it, and don't rob yourself of the satisfaction of doing it yourself.
You might first try looking at the
hints given here.
Then if you really really need the solutions you can get them here
(pdf file -- requires Adobe Acrobat Reader).