I've added code to save the current image to a PNG file. To use this, click on File->Save Image and select what you'd like written to the file. You can save the entire main window, the color table + radar + info panel, the color table + radar, or just the radar sweep. Then select the filename to create.
When you save just the radar sweep, GRW88Level2 writes out a corresponding World File with extension .pgw. The world file is written in lat/lon, not UTM.
Note: the image includes exactly what you see on the screen. If you don't want states, counties, or roads you'll need to deselect them in the GIS menu before saving to PNG.
One final note, a glaring omission is the ability to save the RHI window. I'll add that in the future. The RHI window needs to be spruced up anyway and I'll do it then.
Here's a link to the new exe: http://www.gibsonridgesoftware.com/grw8 ... level2.exe