mod primary key field - newbie question

newbie question ... I have a MySQL table where I want to update (renumber) the primary numeric key field. - I successfully turned field off as a primary key index and UN auto incremented it - then created new sequential numbers for it - then turned back on primary key index and re added auto increment in BUT when I make a new record it does NOT start where new numbers stop last is 51 next should be 52 but jumps to 157 Q: is there a way to reset the NEXT SERIAL ID NUMBER somewhere? how do I fix this? -- Thanks - RevDave Cool @ hosting4days . com [db-lists 09]