I've been looking into draft prospects as well and I really like David DeCastro from Stanford. He plays right guard and is a good pass protector and makes holes for the running game. He seems to be pretty powerful and usually doesn't get beat which is something that this team needs. He also pulls very well for the run game. Here's a link to his profile on CBS: http://www.cbssports.com/nfl/draft/p...david-decastro
Here's also a video showing his positive and negative in three games from the 2010 season: