I've Spent a long time trying to find a way to easily modify the graphics of TF3D, and I finally found a great way to do it, so just in case anybody else wants to know I thought I would share my method... Here it is:
1.) Download the attachment called CFC_GUI.zip at the bottom (this is a manila graphic editor basically)
2.) Extract the EXE file into a new folder (the folder name is irrelevant)
3.) Make sure your device is connected to your computer via activesync
4.) Run the EXE and click Device (top left), then click import from device(this will import all the manila graphics on your device to the program
5.) Find any file that you would like to modify, select it, then click "save as" (bottom right) then keep the name or change it, it doesn't matter
6.) Modify the file with any program (such as: Corel Paint Shop(my fav), gimp, Microsoft Paint, etc...)
7.) Select the graphic in the manila graphic editor(cfc_gui.exe)
8.) Click "Replace With", and select your modified graphic
9.) Click "To Device"
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If this information was useful please click the "THANKS" button
Feel free to post any questions.