Program to Prompt Text Input into Graphics Image

I have a graphics image taken from camera in JPG format that I would like to be able to change the text in 3 or 4 areas. The font needs to look similar to the one already present in the image at these areas but not necessarily identical. The characters that need to be changed would be limited to 01234567890DEFIMNORSTW, plus degree symbol. I would like a program to prompt for those 3 or 4 items and place them/replace on the image. Each prompt or field would have a default value that is customizable if left blank or enter is pressed. Additionally EXIF for date should be prompted or modified to time the changes are made. This program is to run on Windows 7, but would be nice if it also works in Windows XP. Something with a simple entering information interface, preferrably in GUI.