If you have any issues, come over to the nextcomputers.org forums. Do you have a soundbox and accessories yet? You'll need a non-adb version for this cube. (ADB is possible in the extremely unlikely case it's a turbo). Also if it doesn't have a power supply with revision 983 you need the megapixel display to power it. There are workarounds to this using a load on the -12V supply. You'll find ADB soundboxes are much easier (and cheaper!) to get a hold of. I have instructions for how to modify one to work with non-ADB available here:

http://asterontech.com/Asterontech/next_adb_conversion.html