Hi winndy ,

I've worked with SoftICE , i think it's the most powerful debugger for device drivers. And as toro said , the Visual SoftICE is realy the best . Even if you haven't more than 1 PC , don't be worried ! Install a VMware on your PC and use it as your second PC then the connection could be stablished via a COM port.
Try the SoftICE , it would be valuable.

Regards,
Just4UriM