Bought this as a cheaper alternative to allow sky+ anytime to link via my wireless router.
Set up was straightforward, just load the disk into a pc, connect the device and follow the simple menu.
Handy techie tip: if you're router currently has a 13 ASCII format 'key' then when the software asks you for a 26 hex format key, you can simply convert your ASCII key to a hex key, loads of places on the Internet will provide!
So, after 10mins set up, connected ethernet to sky+ hd box, USB to a powered USB source (note sky+ box doesn't provide power through the USB, so I used the Wii which is also linked through the same tv) and all worked fine. Now have Anytime running and £40 saving!