If there's no drivers for 7, I'm afraid your only work around is going to be using it on another operating system - i.e. most likely there aren't any feasible workarounds! You could use it with a linux livecd if it's supported, but again that's probably going to be fairly inconvenient and not that practical.
Sorry to be the bearer of bad news, but the lesson here is look carefully at the small print before you buy... just be glad drivers are in fact coming out shortly!