Tutorial on how to make 'moving wheels' on TDU pictures: Without using Photoshop
Requirements:
GIMP
Paint.net
Instructions:
Open up GIMP, then select the photo you want to use.
http://i603.photobucket.com/albums/tt117/Lemonfizz224/GIMPHALP.jpg
Now, open Paint.net, and press 'New'.
Go back to gimp, and select the ellipse tool. Draw an ellipse around the rim, making sure it fits.
http://i603.photobucket.com/albums/tt117/Lemonfizz224/GIMPHALP2.jpg
Copy and paste [Edit>Copy] into PAINT.net [Edit>Paste]
In PAINT.net, go to Effects>Blur>Radial Blur
http://i603.photobucket.com/albums/tt117/Lemonfizz224/GIMPHALP3.jpg
Make sure the black cross is in the centre of the wheel.
http://i603.photobucket.com/albums/tt117/Lemonfizz224/GIMPHALP4.jpg
Copy + paste the modified wheel back into GIMP.
http://i603.photobucket.com/albums/tt117/Lemonfizz224/GIMPHALP5.jpg
Then simply use the eraser tool to erase out the black edges of the wheel.
After that, you can repeat this for the back wheel.
Don't forget to anchor the layer once its in place and finished
Finished product:
http://i603.photobucket.com/albums/tt117/Lemonfizz224/GIMPHALP6.jpg
Note: I did it in a rush, thats why the edges are.. bad lol
Hope this helps...