Stop available downloads from starting automatically??

iTunes preferences -> Store

Uncheck "automatically download prepurchased content"

Regards.

Yes; that's what you just said you wanted to do. Pre-ordered content and "available downloads" are essentially the same thing.

Sorry, that's a different question than the one I though you were asking. Once an item enters the download queue, the user cannot remove it. Either let it complete the download (easiest) or contact the iTunes Store customer support department through the Contact page (select the category and subcategory closest to the issue you're reporting and you'll find either an "Express Lane" button - just follow the instructions to get to the contact form - or an "Email Us" button) and ask them if they'll remove the item(s) from your queue for you.

Note that you will automatically get an SD version along with any HD movie or TV show you purchase. The SD version is included for use on iPods and iPhone and cannot be declined. So this may occur again, and the iTunes Store probably won't keep clearing the queue every time, so you probably should just accept those downloads.

Regards.

In previous version of Itunes I could delete the unwanted file and the uncheck the box in the store tab to stop automatic downloads. This stopped working when I updated to version 10. Dont want both SD and HD versions of TV shows to download since I have a monthely download limit. I have emailed support but dont expect a solution.