Do yourself a favour and get RealFlight G4.5 instead. Seriously. I've been using RF since G3 and it's done nothing but improve, however the other day I installed FS One out of curiosity (don't ask where I got it and I won't tell you no lies) and I couldn't have been more disappointed with it. The software itself is bloated and resource hungry, the menu-ing system is an over-complicated, klunky piece of krap, the graphics look like they're straight off my old 1990's Commodore Amiga 500, the only "ground handling" they implemented is a reduced rolling resistance on grass vs paving, but most unforgivable is the flight physics. The models "felt" like they were rolling around on an invisible elevated road rather than flying through a changing liquid medium (ie: air). I've found better flight sims in video arcades. You'd honestly be better off running your RC radio through a USB adapter with the PPJoy software and using one of the Microsoft flight sims on an external camera.

To be very honest with you, I didn't pay for FS One and I still feel ripped off. I want the three hours it took that overweight pile of rubbish to install back.