Uberdroid,
It's possible that your current directory (the EXE bin/debug) folder does not contain your media folder, in which case, you will need to either move the Media folder into your bin/debug folder, or use the File.SetCurrentDirectory to the root folder where Media/pics/bricks.tga is located and try loading the image this way,
The unfortunate thing at the moment is that image loading does not return an error code if it cannot locate the image file. You will need to test for this yourself by using the File.FileExists function.
Hope this helps.
Paul.