NmapNT is a very powerful tool for UNIX. The scanner runs on the command line and is thus not very easy to use.
Using Spyware Doctor to remove NMapNT Port Scanner AUTOMATICALLY!
To terminate the port scanner, you should kill and delete following process:
nmapnt.exe original.exe win_2000.exe win_9x.exe win_nt.exe
However, a few of registry entries may be left behind deleting. You can ask for Spyware Doctor to clean up.