I'd appreciate it.

Am I correct in thinking this is for PC from the recent steam sale rather than say the 360 version?

Oh yeah, duh.

PC version. I actually got it at release but never played co-op because no one on any of my forums seemed up for it. I don't think I ever asked here though, and the sale might mean some people just got the game.

So totally in, if nobody else pops up (I have a hectic schedule, but really am interested in the co-op campaign).

Its not that long a coop campaign but its good fun stealing each others kills or setting up an 8 kill quick chain shot sequencewith both agents taking down a platoon in a few seconds

Sounds good. I'm free a lot now-a-days because I'm job hunting, so any time is good for me.