Thanks guys..the Context_Info led me to some more googling and I found this which I very close to what I was hoping for..

http://jasondentler.com/blog/2010/01/exploiting-context_info-for-fun-and-audit/

Hi,

Our user base is public facing and very large, so we cannot/do not want to create Window accounts for each and every user. They will be stored in an...