Rams quarterback Marc Bulger knows that it's only May, but is expressing optimism about the team's retooled offense. "The culture around here has changed and it's great," Bulger said Sunday after a three-day minicamp. "We can talk all we want in the spring and during camp and during preseason about how good we're going to be and how the changes are great. "But until we start winning games, we have no room to talk." St. Louis made several upgrades on offense, signing free agent center Jason Brown and drafting tackle Jason Smith with the second pick.