How do I see the material count when I am playing?

Material count is the total value of pieces left for that player. For ICC the individual piece values are: Queen=9,  Rook=5,  Bishop=3,  Knight=3  and Pawn=1. The total you start with is 39.

BlitzIn interface: Menu above: Edit > Settings > Board/Pieces > check Material Count
It is shown behind the username and rating in between ( ).

Dasher interface: In the blue bar above the board it gives, behind the username of players, in between [ ] the material count.

ICC for Mac/Windows interface: There is no option yet for material count. You can see the pieces a player has lost behind his clock.