AIX is still supported by IBM. Rather than asking an internet forum, why don't you contact IBM or, at least, read their website? Your work has obviously paid a lot of money for AIX so I would think they are entitled to contact IBM to ask a simple question.
Also, tell your friend he is a troll. If he read www.groklaw.net
he would see that SCO is on the way out, not AIX/IBM.