The blackjack in the Microsoft Entertainment PocketPak is very good -- you can set it up for Vegas, Reno, A.C. rules... or you own custom settings. It has many other good games as well -- Taipei (MahJongg), Hearts, Missle Command, Cinco (like the Game Show Lingo), etc. etc.
http://microsoft.handango.com/PlatformProd...nId=0&catalog=1
--RHYNO