Problem solved!
There is an XP Patch for the NT version of SoftICE. Search for it, i cannot give a link

, but I use it and my SoftICE NT works under WinXP.
i think i may give the file name only: nticexppach
Just make sure you set up the winice.dat! Import all the kernel files at startup or no command will be recognized, sorry you have to do this manually.
After you set up everything it should work fine. You can get additional tutorials for SoftICE online
Happy training!