Save a replay of your track. Edit it with the editor -> replay. Press play and pause it in the place you want to take your photo. You can use freecam, so place the cam in a nice postion. Then up-left you will see a button labeled as "BMP". Clik and you will see a menu for your file format...
Your pic will apear at the Maniaplanet folder as "ScreenshootXXX" (XXX is number)
This is a very short explanation... You can get nice info, tutorials and forum in
Mania Creative