It looks like the two companies were unable to patch things up, not surprising considering their ugly, public fighting. Good luck to NBC with hulu and that wonderful NBC Direct service, which sounds great.
It requires Internet Explorer, the NBC Direct Player (Windows only) and the latest .Net framework. Videos are available for only 7 days after they initially air, and disappear from your computer 48 hours after you begin watching them (unless you remember to renew your license before then). Also, videos will only play on the computer used for the initial download.
Mac users cannot use the service, though NBC says a Mac version is "...planned for 2008." Finally, downloads cannot be transferred to portable devices.