Please run the following and post the full and complete, unedited output here.
DBCC CHECKDB (<Database Name>) WITH NO_INFOMSGS, ALL_ERRORMSGS
Save the output to a text file, zip the file and attach it to your post, it's going to be too large to post directly
Oh, and in the meantime, locate a clean backup (backup without corruption) as you may need it.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability