Click on start > run > and type in the following
code:
"C:\Programfiler\MessengerPlus! 3\MsgPlus.exe" /Remove
Please note, the spyware that you are refering to is Optional which means that you can choose not to install it. During the install process you do not need to remove Messenger Plus! to uninstall the Sponsor program. By running the uninstaller it will ask to uninstall the sponsor or both the Sponsor and Plus!. I suggest giving Plus! another shot without the sponsor but its your choice.
Edit: Blah Patchou changed the commandline for the uninstaller lmao!