please help if you can.

[DeLetedPuppy]

I am a big fan of porche unleashed and i have downloaded a few tweaked track but I'm really interested in trying to make my own. As a test I made a change to the speed signs in shwartzland to have an atomic symbol on them but it still showed the speeds instead? Im using the EA graphics editor along with the gimp image editor. I went ahead and followed the import istructions to as well please if any one can help me I would love to try to make some tracks for others as they have done for me. Thank you.