Flukey - I am yes, although I've only briefly used it to check upon what aircraft are in a select few airlines fleets.
ronzie - I have downloaded AIFP2 and it definitely looks like the sort of program that I need! The thing is though, I'm not even a novice when it comes to editing AI, my only real experience of installing AI has been using the WOAI installer. Is it as simple as loading the .bgl file to AIFP2 and changing the model? Also, can it be used to install new AI flightplans?