With the Save with Options selection from the file menu, you can do a save to the previous version. 7.0 can save to 6.1 and 6.1 can save to 6.0. If your colleague doesn't have 6.1, post you code here and I'm sure someone will do the conversion for you as long as there's nothing in the 7.0 code that would prevent it. There's always the possiblity that the 7.0 program uses some featrue that isn't present in 6.0.