I've never before used such a program and wish to know what I should do to ensure I get a working program. With that done, I need to learn it and ensure it works as I intend.

-EE

Uh... ok... just go get SCMdraft 2, it's what we all use here.

Wrong forum for this topic anyway.

The ISOM program converts isometrical terrain to square terrain, but since it appears you just want to make square tiles, use SCMDraft or another 3rd party editor (not xtra)

Get the latest stable release here (0.8.0), before you accidentally download an old version and start asking questions about why certain features don't work or the like.