Go to this page here and download the Passma removal tool:
*www.2-spyware.com/remove-passma.html
Also, kill the passma process by pressing either Ctrl+Alt+Del in Windows 9x/Me and then pressing End Task or using Ctrl+Shift+Esc in Windows 2000/XP and going to the Task Manager, and going to the Processes window and selecting passma.exe and then press the End Process button. Then search for the file passma.exe and delete all instances of the file.