Moved to Malware Discussions > Home User Assistance, as this appears malware-related more than anything else.
It would help to know what McAfee products and versions you have installed. Double-click your taskbar icon to open SecurityCenter
If it's the 2009 version with the square taskbar icon click About at the lower right-hand corner and post what version numbers are shown for each application.
If it's the 2010 version with a shield in the taskbar then click Navigation nat top right and then About at left and post the same information asked for previously.
Right-click My Computer (XP), Computer (Vista/Windows 7) and go to Properties and post what that says about operating system and service pack.
Follow the guidelines in this document: http://community.mcafee.com/docs/DOC-1294