Tic Tac Toe Game in VB.NET

TicTacToe Game in VB.NET
TicTacToe is a demonstration of the AI game playing minimax algorithm. The game plays out every possible combination of moves from each position and consequently is unbeatable. This example uses .NET Beta 2 and was written using a text editor.
The source code uses a modified Model-View-Controller design pattern. In essence the core of the game (model) has a clean API and is only loosely coupled to GUI/ controlling logic. I have two different implementations of the utility function, one using Regular Expressions (.NET is a superset of Perl 5 functionality). To run the game using Regular Expressions uncomment the preprocessing directive '#define RegExp'.
This code is fun and should be useful to anyone considering a degree in AI.