The University of Colorado's Board of Regents will meet in secret tonight to receive legal advice about the Boulder campus's possible switch from the Big 12 conference to the Pac-10, sources told the Camera. The university doesn't anticipate any formal action to result from the discussion about a possible league switch for the Boulder campus' NCAA teams. There will be no public participation and the meeting will take place behind closed doors. Colorado athletic director Mike Bohn said last week that he and other school officials have been led to believe the Pac-10 Conference is on the verge of issuing invitations to six schools in the Big 12 to join its league. The other schools include Texas, Texas A&M, Oklahoma, Oklahoma State and Texas Tech. Regents are holding the "special" meeting tonight at 5 p.m. in executive session to "discuss a specific legal matter." The board is meeting at 1800 Grant St. in Denver.