No, their last national title was won 1997, the year before the BCS was invented in 1998.
The Alabama Crimson Tide have won 13 BCS National Championships.
October 26, 1991 in Baton Rouge ... Florida State won 27-16.
75
Ohio State has appeared in 9 BCS Games, but has only won 6 of them.
LSU
If you're meaning the current BCS system (post 1997) it's a tie between Florida and LSU, both at 2 wins.Florida and LSU have both won 2 BCS National Championship Games
No, the BCS is decided by a single game, the winner is the champion. However, there has been a shared National Championship since the BCS began. LSU won the BCS national title game in 2003, but the AP granted the National Championship to USC.
57 BCS bowl wins,32 other bowls win.36 bowl loses
Florida and LSU have each won two BCS championships. No one else has won more than one.
BCS began in 1998
They won the 2010 Rose Bowl game against Oregon 26-17