The New York Giants have signed offensive lineman Rich Seubert to a two-year contract extension, a move that provides the team about $400,000 in additional salary cap room for 2006. By signing Seubert, the Giants secured for the long-term a player who could work his way back into the starting lineup after overcoming a potentially career-threatening injury. For the second consecutive year, Seubert accepted a salary reduction, but could gain more security in a deal that ties him to the Giants through the 2009 season. The two extension years added to his contract are at base salaries of $1.05 million for 2008 and $1.3 million for '09. His base salaries for the next two seasons, in the reworked portion of his existing contract, are $545,0000 for '06 and $790,000 for '07.