Do any of chaps know of a good way to amand the ZFW on the 767pic.I know that there is a piece of software called dispatch for 767pic but this does not seem to work with my system (i cant input data to boxes). I think the problem may be that i have windowsXP and office 98. For some reason dispatch does not seem to like that combination. Anyway any help that you can offer will be much apprieciated.

Yup. Just edit the line empty_weight in your aircraft.cfg. Remember to input the weight in pounds.

Notepad, comes to mind :)