How to change Alternator/Water pump belt?

Crank pulley/Alternator/ Water pump belt ( according to owner's manual) got torn apart. So battery isn't charging. Looked thru all posts and could not find one about belt replacement. Can some one tell me if I should even try to do it myself? Does any one have repair manual with description?
If so, please, email or I can give my fax, if its easier. 94 J30t.
Thanks.

hopefully that pic i sent helps with the last step!

Thank you , will try on Thursday.
I hope it is the last peace of that puzzle.
Let you know.
Thanks again!