Open paint, then simply edit, paste.
Aha! I'm doned it with Screenshooter .NET, what way:
I am tried and I can't done. Later, I created "MM2 Screenshots" the folder in C, opened Screenshooter .NET and changed rote to this folder. I changed the screenshot hotkey to F11 and opened MM2. I'm tried my modified Citybus Leyland Olympian 10.4m in Car Speed Track and I done the 267mph. I'm pressed F11, stopped the bus, press ESC, click to Quit to Main Menu, minimize the game, go to my created folder and finded it (I maked the "Codec" as PNG before I opened the game) and I'm done.