Don't want to be quite as sarcastic as the last poster, but maybe it's high time you got on the internet, asked for access to the relevant parts of Dassaultfalcon.com, and did some homework.. There are plenty of resources out there to be had.. even if you can't get access to Falconperf, I'm sure whoever does the flight planning for you can get you access to a good software..
I use arincdirect.com myself, as they provide our data plan, pilot access to the flight planning feature for pilots is included... Most dispatches use Jetplanner, and they never mind giving me access to Jetplan.com to run trial flight plans..
If all that fails, yes, you should still have the performance books are at least a QRH from your initial... Hopefully you did do a type rating on the 900LX, yes?