QUOTE (Dixie Flatline @ Feb 22 2010, 12:30 AM)

The potential to actually upload your consciousness into the matrix would be a huge, earth-shaking, UGE-level development, with megacorps, matrix cults, and god only knows who else all in it to figure out the secret.
This could make for some interesting fun if the player realizes it before anyone else. Do they tell the ghost the truth? Do they rescue them and sit on it to keep the corps out? Do they try to sell their friend out for some quick cred? If so, how does the corp screw them (because they JUST have to)? ETC.
I agree with the above posters, E-Ghost and specced out Technomancer is the way to go. I've not read the AI/E-Ghost stuff in a while, so I can't give speicifics though. One thing I'd reccommend, is have the AI keep fairly static abilities for the most part. If the AI is too versatile ("Hmm, give me a second, I think I might be able to do something about that.") or able to call in the occasional "Matrix Friend" ("I think there was someone/something around here that can help...") then it will tip its hand as being a TM (even if the TM itself doesn't realize that is what its doing). Of course, done right and in sublte ways this could be part of how the player might piece together what is actually going on.
Also, due to the rarity of the situation, be prepared to answer the "How did this possibly happen" questions that will come up. Enquiring minds (players and corps) will want to know!