How to changes coordinates to lon/lat?

Discussion created by helena83 on Apr 4, 2011
Latest reply on Apr 6, 2011 by helena83

I'm a first time user of ArcGis or any GIS software and I've run into the following problem that I do not seem to be able to solve.

I've opened a Landsat image and I need to define the exact location of some dams that I can see in the image in lon/lat coordinates. Now ArcGis shows coordinates in meter units and my problem is that I simply need to change the units of coordinates to lon/lat for the image. How do i do this?

Thank you,