Before people go bashing me for buying one of the cheap Xbox with only 4GB. I did it for a reason, because I already have a PS3 and wanted an Xbox for other games.

Now, I played Skyrim last year for a long time. Like most people on the PS3, my game just flat out crashed after a certain amount of time. So I gave up.
Well now I have an Xbox and would like to try it out again.

So finally, my question is do I need to have an Xbox Hard drive to download it. I have the 16gb flashdrive, so space really isn't a problem.

(I bought fallout 3 GOTY and it required a hard drive, that's why I am asking. I know $5 isn't much of a risk, but still)

Thanks.