Wow, this makes no sense at all. There are two (perhaps more) methods to add a printer in WS2008, but only one of them allow you to add an LPR port (as far as I could tell). At any rate, to save everyone the same 3 hour headache I had with getting an LPR printer functionng in WS2008, check this out.
First of all, in order to enable LPR in WS2008, follow these instructions:
1. How *not* to do it:
Do not go through the printer section in the control panel.