Just re-read my response, and I would add some things.
Do you have any anti-spyware programs installed? If so,run them. If not, go to Microsoft Windows Update Web-site and get MS Anti-spyware. It is free. You might want to have (and use) more than one, because one will not remove all the spyware. Go to infostar.com, give Peter a small donation for maintaining this wonderful website, and go to the virus info. page. There you will find many good, free, A-V, anti-spyware, firewalls, etc.Help yourself! Now get rid of the McAfee. It is full of glitches, uses too much capacity, and is slow to run. I recommend you try AVG, BitWare BitDefender, and Panda, as well as any of the others that you take a fancy to. For firewalls, I like ZoneLabs freeware. There are others but some require quite a high level of technical ability. More than I like to bother with! For Anti-spyware, I like the ever popular Lavasoft Ad-Aware, Spyware Blaster from majorgeeks.com (free) and I mentioned above the MS.
Have fun! 8-)