Some Boxee users have teamed up to resurrect the ATV-Usb creator and craft an updated solution specifically for the Boxee Beta (http://blog.boxee.tv/2010/02/25/get-a-bite-of-this-%E2%80%93-boxee-beta-on-appletv/) on the Apple TV. If you already have Boxee Alpha installed on your AppleTV, you should be able to just update Launcher and then update Boxee to install it, as no new patchstick is needed.
Boxee provides cross-platform, freeware media center software with an user interface and social networking features designed for the living-room. It’s still under development.