While clearing out my xbox hardrive in order to make room I accidently deleted Dawnguard. The only place I know of to download DLC is in the 360 marketplace, however, when I try to re-download the DLC it says I must pay 1600 points. Is there anyway to simply re-download the DLC or to I have to rebuy it.

Thanks in advance.

Open up the guide, then go to the Settings page, then down to Account Management. That should bring up a couple of options, one of them being 'Download History'. From there you should be able to scroll down to your Dawnguard purchase and re-download it.