Coperative play- Need some suggestions!

Cooperative play- Need some suggestions!

I'm looking for a couple of good RPG's I can set up over a lan for my wife and I to play. We've done several on the PS2, Baldur's Gate, Dark Alliance I & II, Gauntlet, etc., but have exhausted the pool of cooperative play titles. I'm looking for something on the PC with cooperative play and with some quest/puzzle solving. We tried Dungeon Seige multi-play, but the difficulty level increases outpaced her ability and it ended up a reloading fest, which killed the entusiasm pretty quick. She likes to "dress up" her character and modify the skills /feats as we progress.
How about some suggestions. I'm ready to spring for two copies of a good game so I can load up both comps for play.
Thanks for your input.

only one i can think of is never winter nights. coop is pretty much dead on the pc IMHO

Though Ive never played them much multiplayer, the Baldurs Gate series and Icewind dale series can be done co-op. NWN can be done co-op and you can get new mods for it, help keep it fresh kinda thing, and Freedom Force, nothing beats being a super hero!

Thats all i came up with, though there is more.

I've got NWN on my PC, I'll look into it when I get in this evening. Never did finish that first expansion pac! Thanks, hadn'r thought of it.