Seems like you've tried the most important steps in troubleshooting, so that's good.
What I'm wondering is: when you deinstalled iTunes and all those other things, did you do it in a specific order, according to http://support.apple.com/kb/HT1923 for windows Vista/windows 7 or http://support.apple.com/kb/HT1925 for windows XP ? I don't see Apple Application Support in the list of components you deleted. I would recommend removing everything again in the specific order using the article you need and trying again to sync.
Also: try creating another user account on your computer and syncing again, because sometimes software issues are user-wide.
hope this helps, keep me posted
Message was edited by: jesterwylde