If you are unsure on how to post screenies then read this as it is a simple easy-walk through guide without the pictures to slow loading process.
IN-GAME: if you want to take a screen-shot of something cool, funny or just driving around the track, hit F12 and this will take a picture of the current screen. and the picture will then be stored somewhere deep in the files and folders, so this next bit will show you how to get to the folder.
DESKTOP: okay, so now you want to find the screen-shot you took. Open start menu and find "Computer" and click into it. Now the tricky part is that you need to find the (C:)drive. Once you find this you then open it and go into Program Files and then find the rFactor folder and go into that. Then go into the UserData folder and into ScreenShots.
if i have to simplify it then here it is. Start/Computer/(C:)/Program files/rFactor/UserData/ScreenShots and WAH-LAH
have fun and this is also the thread to post screen-shot.
be-ware of slow loading as if this is to fill up with screen-shots it will be slow