First, Welcome.
Try out the search option, it is quite satisfactory. There are loads of great stuff here.
About the stats. There is no way within AOK to edit the stats of a unit...however...
There are many ways to get around this. To decrease HP, you can damage the object before making it visible. Its not the best, but at least it achieves the goal.
To increase HP, well, all you can do is heal the unit with a monk, or repair the building with an ally villager.
Think of other ways you might get around it. Hope this helps.
EDIT: If you're still interested in the Hex editor and such, here's another thread you should read.[This message has been edited by SwordForTheLord (edited 10-21-2003 @ 12:27 PM).]