The link Tom posted only contains the third HD Net Test pattern.
I have attached all three HDNet test patterns as well as the INHD Test patterns.
You could burn them to a CD if your DVD player accepts CD's of JPEGs, or you could put them on a USB device and use the 622s Media Link capabilites.
Because these are JPGs I doubt it will be a very good tool to test resolution and clipping. But it should work to help adjust brightness, contrast, sharpness, convergence, and color balance.
Another option is
http://www.w6rz.net/ this site contains a lot of test patterns. If you have an HDDVD player he has included an image that you can burn to an hddvd. If not you can use the .ts files to create a regular dvd with the test patterns. Using these test patterns is a little more complex, and will either require prior knowledge or some research on teh intereweb.
Take the time to get the most out of your HDTV
HD Rules!!