Smart Cards for Windows XP Login?

coleman asks: "I just bought a used Litronic Netsignia 210 smart card reader / programmer, from a friend for 20$. It came with 2 Cyberflex Simera phase 2 + java sim cards from Schlumberger. I was looking for a way to use the smart card (with a pin) to log in to the machine. The litronic people make a software called net sign that does this, but it is 99$ and comes with a Netsignia 210. I'd rather not have to pay that much money for such software and am looking into other options. I have heard that the University of Michigan has done this, but I don't know if they've released any of their software. I've tried several searches on the net and have only found links on DSS hacking." Anyone know of cool smart card apps for windows?"