There's way too much info on the web about this stuff. Most of it involves really heavy registry editing that would probably not be a good idea. A lot of the pages just recommend purchased software to take care of it... but there is so much of that as well, and the spyware updates itself subtly in so many ways, that there's no guarantee that it will remove it.
Something else you can do that I can look through...
Click your start button and find the icon that says "Run..." and start that. A small box will come up. Type "msconfig" (without the quotes) into that box and click "OK". That brings up a really handy tool for stopping things that load when you start windows.
Click on the "Startup" tab on the far right. If you can, give me a list of the items there. I just need the "Startup Item" column and the "Command" column (you'll probably have to make the "Command" column bigger to see the whole lines).
If the list is too long you probably won't be able to get it all for me (you can't copy/paste from there.) If that's the case just scroll down the list and see how much stuff you recognize and what you don't. There will be a lot of stuff you don't know what it is but that's OK and normal. You should though, for example, see something somewhere on the list for "McAffee" since that should be loading at start to keep you protected...
A lot of the names in the "item" column may look unfamiliar, but if you look at the "command" column you'll see that they start, for example, from your program files/mcaffee folder. So there may be several entries starting from the same folder, that's OK.
See if anything just doesn't seem right and let me know those entries that might be suspicious.
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http://www.idexter.com
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-- The world is what we make of it --
-- Dave
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www.idexter.com