I think that will be hard to find on internet what you're searching for...
Quite everyone had a cracked version of autocad 2002 so probably Autodesk not even think to keep a shareware of it.
If you need it just to look and print old drawings, you can download one of the many dwg-viewers, but if you need to modify something... well, there is no one who can let you work with his copy of that program just for a couple of days?
