Update Nightmare

I upgraded to itunes version 10 and now the icon on my computer (running Windows 7 64 bit) takes forever to open if it opens at all.

I also can't get my music to sync to the Ipad. I chose music and choose to sync all my music but the Apply button isn't an option...just Revert.

My music is in my itunes account. Please help...it is driving me crazy. I can't believe Apple would make such a mess with a new version of itunes.

If I had known I would have never done it.