Trying to end a five-game skid, the Rams went home for an NFC West rematch with their historic rival, the San Francisco 49ers.  After a scoreless first quarter, the Rams drew first blood in the second quarter with kicker Jeff Wilkins' 24-yard field goal and RB Steven Jackson's 36-yard TD run.  The 49ers responded with RB Frank Gore's 12-yard TD run, yet St. Louis got Wilkins to kick a 51-yard field goal as time ran out on the half.  In the third quarter, the 49ers took the lead with QB Alex Smith completing a 1-yard TD pass to TE Eric Johnson for the only score of the period.  In the fourth quarter, the 49ers increased its lead with kicker Joe Nedney nailing a 24-yard field goal. The Rams got the win with QB Marc Bulger completing a 5-yard TD pass to WR Kevin Curtis.  Not only did St. Louis improve its record to 5-6, but they also snapped a five-game losing streak.. How many touchdowns did the Rams score in the fourth quarter?