if you wanna use the two programs do this:
go to msconfig>startup and disable threat fire...
reboot the pc
go to taskmgr.exe>tab services and click in the bottom "services"... go to threat fire and chose the option "manual" startup
reboot your pc...
it will not appear the icon of threat fire in the notification area
open your msn... ... you will see that messenger plus is enable...
click on the treath fire icon that you have got on your desktop, taskbar or wherever you got it...
hope I've helped you
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