Basically, strip them of everything and make them start over scratch.
I'd add one more thing: reap the node and mark in the comments about the reaping that it was because of plagiarism.
The stocks and pillary might not be a bad idea as well! :-D
Peter L. Berghold -- Unix Professional
Peter -at- Berghold -dot- Net; AOL IM redcowdawg Yahoo IM: blue_cowdawg