So GR:FS is not for the PC as I am sure you have heard about & you still like the classic PC Style Keyboard and Mouse to play with?
A possibility may be here. Basicly it would be like setting up a PC that can play high quality games without the updates and drivers and Graphics cards to worry about. What I am talking about is the XBOX 360 yes that's right the XBOX 360, if you don't like the Console Controls, You can buy adapters such as this one
http://xim3.com/?page_id=187 (I Do Not Have One Myself But I Am Thinking Of Getting One) so that you can actually plug in a USB Keyboard and Mouse into this device and it will play just as a PC! All you need is an Adapter, a Small TV Screen, a Regular Computer Desk and an XBOX 360. You could set your gaming station up just the same as a PC on your Computer Desk. That site also shows you how to set up the device.
But there may be one problem so don`t get your hopes up.. Here it is.. I do not know if gr:fs will be supported or even if it will work with this set up. This is something you would probably have to speak with the vendor about!