Venting my englander 25 pre-fab fire place?

I have an englander 25 in the basement, love it bought another. The second one is going right in front of my "pre-fab" fire place. We built a modular home 4 years ago, so its kind of air tight (not as much as I'd like). My question is how do I hook my OAK? I'd rather not cut a hole in the wall besides the fire place, as i'd have to run the pipe a good two feet. That'd be ugly! Any clues? I know with the englander I have to have the OAK so... what do I do? I did a search but really couldn't find a good answer. Help!

There's a pellet vent pipe that includes both the exhaust vent and the OAK in the same pipe. I can't recall the name but someone here will pipe up with it no doubt. You run it up inside the current chimney and you'll be all set.

Bump. Please tell more!

selkirk direct temp http://www.northweststoves.ca/pdf/selkirk/b-selkirk-direct-temp-pellet.pdf