Just as piece of advice, think twice before signing up for SITA GraFlite. Has some major drawbacks, re-routing is a nightmare as the database used by SITA to store all its routes is pre-historic and there are a few more I could mention as I use it only a daily basis. Aaaaarrrgggghh!!!!!!!!!
Have you tried Jeppesen Jetplan? It's user friendly and you have more control over routing options and is much easier to amend payloads, fuel etc etc.
Keep it tight at the back, and watch out for the spare man!
AK