For all you guys with screwed up pictures and geometry issues: I have attached an image, 800 x 450 (upload limit size) that should help you correct your geometry issues.
The picture is not very big, but its the upload size limit, and is 16:9 aspect ratio. I would probably recomment opening the image in photoshop and enlarging it to 1280x720 or something, then either burning it to a disc and playing it in a dvd player, or some other way to get it up on your TV screen. (I used the PC connect through my Xbox 360)
Make it so the image is fully zoomed on your screen, without using the TV's zoom function. Then go into the service menu, (power off, mute-1-8-2, power on) and make necessary adjustments.Notes:
-The outer edge has a single pixel of red around it
-The grid is NOT made of perfect squares, but they are evenly spaced hor and vert.
-Blue lines cross at dead center and go corner to corner
-Green circles are perfect circles, centered perfectly.
For more help adjusting, I found this post helpful: (I don't remember who wrote this, I just copied it from this thread)
"Let me tell you the steps that work for me. FIRST, I adjust the V-AMP and H-AMP down, so that the screen is actually smaller than the set allows. Then I follow the service-menu instructions, in the PDF file linked earlier in this thread...
1. Adjust the BOW and ANGLE settings so that the very center of the image (hopefully you have a THX optimizer or something with straight vertical lines) is straight up and down. Don't worry about the very tips - just get the center line straight for the most part.
2. Adjust the H-PAR and H-TRAP so that the lines on the left and ride sides of the screen are straight. Again, don't worry about the very tips on top or bottom - just get the far left and right lines to be pretty straight.
3. Adjust the UPPER CORNER and LOWER CORNER settings to get the tips of the lines to be straight - or as close to straight as you can get 'em. It isn't going to be extremely perfect - just work to get things as straight as they will go for that setting, following this general order.
4. Adjust the V-LIN and V-SC settings so that the space between horizontal lines is even - so that the screen isn't "squished" towards the bottom, or top.
After following these steps, I take a few of my own steps. I center the screen as best I can, using something off of the DVD I'm using to "optimize" my set (using the V-SHIFT and H-SHIFT settings). THEN, I adjust the V-AMP and H-AMP controls to push the edges off the ends, because usually the very edges of the screen are still a little bit curvy, compared to the rest of the image that now looks good based on my tweaking.
Now, you should be more or less done. The last thing I usually end up forced to do is to go out of the "deflection" menu and into whichever Video menu contains the "4x3 POSITION" setting, and I'll adjust that to further tweak the centering of non-widescreen images. Then I'm done.
Remember, after turning the TV off and back on, ALL of the color/contrast settings are reset to factory, so immediately turn off dynamic mode and tweak your settings to the way you want them. Write these numbers down, because everytime you access the service-menu you'll lose your settings.
Hopefully my description of what I do will help you! Ask more questions if it doesn't...