Go to a command line (Start->Run then type cmd and hit enter)
Type:
ipconfig /all
ping 192.168.80.1
ping google.com
Then paste the resulting outputs back here...
I can't paste any data since the windows computer isn't connected to the network.
ipconfing does basically nothing
pinging 192.168.80.1 & google.com...nothing
I'm glad you fixed it, however...
none of these commands would have done "nothing"! you spelt ipconfig incorrectly, and the pings would have come back with messages or errors, either of which would have allowed us to find the issue very quickly. And on point three, it doesn't matter that it was working as an MD before, it is now running XP which could easily have disabled the port (in fact that is exactly what it would have done if you didn't have the drivers installed!)
Have fun with your new XP machine and be aware that it is now behind a firewall so you will have to configure that if you want anything outside the hybrid machine to be able to connect to your XP machine (web admin)