Man if I didn't already have plans this weekend, I'd definitely make the trip down. Acela is extremely expensive, but there are a number of privately-owned buses that operate from down in Chinatown that take you directly to D.C.'s Chinatown (which is the neighborhood that the Verizon Center is located in). I would imagine you could probably do it for under 50 bucks and combine that with a ticket and it would actually be cheaper than attending at MSG.
I'll be there, heading down friday night by car. Anyone know a good spot to meet up for drinks prior to (or after game) so that we can all get together no matter which section we are in? Just a thought. GO RANGERS!