I'm looking for a program, free preferably but I'll pay if I need to. I want to be able to place many individual pictures on a 24x36 poster size template. I want to be able to overlap, rotate, skew, resize in place, etc. I then want to create a file I can take to have printed at Costco or anywhere else that can do the job. Poster layout I guess it might be called. Does anyone have a suggested program to do that?