Best Computer Bridge Game?

Help.  I'm looking for a challenging bridge game for my wife that she can
play on the computer.  She has just started playing Bridge and wanted to
find a game where the computer opponents would reasonably play like good
players.  Any suggestions?

The only commerical Bridge game I could find at the stores was from Hoyle
Card Games.  Also, there are a bunch of games I found online, but are any of
these any good?