I have this on Steam (and from what I read, it will work), and have yet to go through the co-op, so I would be down to play at some point.  I work 8-5 M-F (pacific time) and may have a class saturdays, but sunday afternoons are always good, and some weeknights.  What days/times are good for you?

I found a friend to beat it with but I'll still gladly go through with it with both/either of you or anyone else who wants to.  Some of the Trophies/Achievements require more then one person to play with anyways (Professor Portal, Friends List With Benefits)

I think for me to get Professor Portal, I gotta beat it first which I'm almost done anyways.  Add me to Steam if you haven't already

I have all of them cept for 2.  I returned the PS3 version but kept the PC version so I can still play.
When you buy it for PS3, it comes with a code to add it to steam for free and Gamestop had a "Why Rent?" deal where if you purchase one of the list of games they have going on, you can return it within a week for credit towards something else.  So I returned it 7 days later, kept the one time use code and put 39.99 towards Resistance 3

Just sucks cuz I won't be able to get platinum Trophy on my PS3 unless I borrow it from someone and place it in my PS3 for a second for the Trophies to load after I receive these last 2 achievements.