There's load of topic around the fourms about editing, but here's a tip:
Find the logo you want and copy it.
Paste it into Paint and re-size it to 64 x 48 pixels big.
Go on View -> Zoom -> Large Size
Go on View -> Zoom -> Show Grid
That creates a template for that logo. As you may notice it has a lot of colours in it, so when you put it into the game you may need to substitue a few.
If you want to print it out:
Whenn your zoomed in with the grid on it, press Print Screen.
Open a new Paint palette and paste it.
Highlight the picture of the picture with grid and cut it out.
Paste it into Word and print.
If you don't understand I will add pictures.