select so.name as 'storProc' from sysobjects so join syscomments sc on so.id=sc.id where so.type='P' and sc.[text] like '%BIT_YOU_WANT_TO_FIND%'
Say for example you're looking for all the stored procedures that mentioned the table 'user_table' - then just use this script and the all the stored procedures that make mention of this will be returned.