Just so that you know. In Creo Parametric, it's a built in feature. You can open image files and place them over a datum plane to use them for tracing your curves. This is how I create logo's. In Wildfire I had to use our ISDX extension to do this because it was not a standard feature for Wildfire.
Just an FYI
Here is a short video from my YouTube channel "CreoJunkie" that shows how the process works in Creo Parametric.