I recently purchase this software and I'm really glad I did.
It's great to accompany yourself or to simulate stuff you write. I tend to forget the more technical modes (Dorian, Phyrgian etc) at times but Guitar Pro sorts this.
The only modes I use regularly are the Phyrgian, Dorian, Aeolian, Ionian and the Locrian for tension when I forget them I tell guitar pro 5 display the scale across the whole neck, I know it's kinda cheating but hey! it works for me.
Thats so amazing thank you for haphazardly flinging that nugget of wisdom into the virtual spectrum we call the Internet.

Although it is a good program!