There's a huge amount of information on the Pegasus Google Group forum.

Once you get it working, the results can be very good. Their packaging isn't well designed however and people have experienced a lot of breakages/sli's during shipping.

Once it's arrived you'll want to comb over it, making sure all the screws and everything are tight and then try a test print. Chances are you'll have to re-level the build plate and calibrate it depending on results. Once it's all correct though (and assuming it's sitting at the correct temperature,) then you should be able to get some very nice, consistent results.