Here is what I came up with. I did use the Test Card maker program mentioned above, and then added the "Wii" with Gimp. I think the black levels might be a bit dark, but otherwise I don't think it's bad for a first try. I'm using 3.5, 7.5, and 11.5 percents of a 256 scale (I thought that was what they were suppose to be). If someone knows a better way to handle this, I'm all ears.
I've transferred the image onto a SD card and loaded it up on the Wii photo channel. Since this one is 480-360 it obviously works best when in 4:3 mode. It seemed to fill the screen, and worked on both my TV in 480i mode, and on my projector in 480P mode. On the TV I really had to crank up the brightness to get the blacks right (the 3.5 level one blend with the 7.5 level one, with the 11.5 just barely visible). On the projector, I had to increase it, but not nearly as much.
Let me know what you all think.
The attachments are both the jpeg image, and the text file for Test card maker. Feel free to modify either. But you may have to change the extension on the TCM file.
NTSC SMPTE.txt 1k . file