Villain is running at 50/13 and doing a lot of limp/calling.

I put him on a flush draw or a Queen. But really, he could have anything with those donkish stats.

What should I do on the river? Check/call? Check/fold? Or lead out with a shove (A Queen will mayeb call that, right?)

Full Tilt Poker, $0.50/$1 NL Hold'em Cash Game, 6 Players
http://www.legopoker.com/hh

CO: $118.25
BTN: $101.05
Hero (SB): $99
BB: $119.65
UTG: $64.10
MP: $9.35

Pre-Flop: dealt to Hero (SB)
UTG calls $1, MP folds, CO calls $1, BTN folds, Hero raises to $6, 2 folds, CO calls $5

Flop: ($14) (2 Players)
Hero bets $12, CO calls $12

Turn: ($38) (2 Players)
Hero bets $26, CO calls $26

River: ($90) (2 Players)
Hero ???

Thanks

I would bet a bit more on the turn (30-32) and shove river.