I'm re-posting this since it's back a few pages now.
If tOSU and MSU win on Saturday, tOSU goes to the Rose, almost certainly to face either Oregon State or USC.
If Penn State and tOSU win, Penn State goes to the Rose. If Oregon State wins their last 2 games (at Arizona and home against Oregon), they go to the Rose. If USC wins out against ND and UCLA, they would get the last at-large spot, assuming that either Boise, Utah or Ball State qualify for an automatic spot. The Big 12 and the SEC are certainly getting two BCS bids this year.
So, to get a BCS bid, tOSU basically needs to win and have either Penn State, Oregon State, or USC lose.
The Orange Bowl gets last choice this year, so it's very unlikely that tOSU will be going there. That bowl will be stuck with the ACC winner against either the Big East winner or Utah/Boise/Ball State.
tOSU's most likely matchups at this point are the Fiesta Bowl against Texas, or if the Fiesta Bowl selects a nearby undefeated Utah team; the Sugar Bowl against the Florida/Alabama loser. If the Rose Bowl is Penn State-Oregon State, an 11-1 USC would get an at-large bid, and tOSU would go to the Capital One Bowl and probably play Georgia.