This is most likely to the the Apple Sync software that is installed when iTunes is installed. This doesn't get removed when uninstalling iTunes.
Next please open Add/Remove Programs again. The names of all the components to remove are:
Apple Software Update
Apple Mobile Device Support
Apple Application Support (iTunes 9 or later)
You might not see all those, but remove any you do see.
Then you will need to confirm that they have been removed properly, as the Windows uninstaller often leaves folders behind. I will not list what folders to remove, as there is an Apple article that gives step by step instructions depending on how much detail you need. Please check this article for the detailed steps:http://support.apple.com/kb/HT1925
This will take a while, and if there are any questions on any step please let me know and I will explain them.
When all Apple Software has been fully removed, restart your PC, and get back to me.