hi sue,
lets try this:
hit your run button, type in regedit, then ok, your registry box will open up, go to and hit the edit button, in the box, type in your offending processes one by one in the search box. if the values are found for these processes, delete the values by right clicking on the values and hitting delete.
once finished, reboot your computer.
now to check:
first hit control alt delete, a box will open up and you will see your processes. delete all the offending processes you find by hitting the end task button if they are still there.
reboot your computer, go into safe mode, you said you have the latest defs, ok, if not before you go into safe mode get your latest defs.
scan your computer with your anti-virus, anti-trojan, spybot, adaware. delete all the files they come up with. clean your cache, temp files, history and cookies folders. empty your recycle bin.
reboot your computer.
if you don't have an anti-trojan, you can get a good free one at www.thepublicworks.com, go to payware section, and link to trojan hunter, once there get free 30 day trial, download it and get latest defs. scan in safe mode along with other anti's.
all the best,
murve