does anyone know of a Addon for my map that will show the location of lockboxes? Also one for dungeons instances and the levels needed to enter them? Thanks Mary

yes, gathermate and gathermate data will show you locations on lockbox's

and cartographer has info built into it to show the lvl of dungeons.

dungeon lockboxes are removed by now, are they not? since a lot of goldsellers were abusing them. I know in northrend the only lockboxes that exist are from drops.