NXT Display tools
Doing some surfing on the net I found this (although it is already a bit older I still think it is good to post it here)
At www.legoengineering.com a new tool is posted.
With this tool you can easily create your own images to display on the NXT.
I downloaded the tool and did a little test.
Sure, you can draw and put characters in the display image, but the real power is in the import image function. 
With the Contrast setting you can convert your full color picture to a pure black and white picture and that is handy!
Then I did add some text and I'm ready to save my picture.
It automatically saves in the Pictures directory of the NXT software, for easy use later.
Now I can use the NXT-G software to upload my custom picture to the NXT.
Have fun Using this nice tool.
Download it at: LEGO engineering.
Comments
Jim
I have, just yesterday, downloaded the tool (version 1.0.0 Right click the executable and see the about information). It does show me a list of available pictures.
Be sure however that the extention of the JPG pictures is indeed jpg and NOT JPEG, the tool will not recognize them. But since the format is the same, you can rename those pictures to jpg. then they will be visable in the File|Import|Form_ImageImport window.
In order to use the pictures I would like to sugest to first change the picture in size and shape so that it matches the final display shape.
Be sure that you actually rename the (last) extention part.
With XP you may need to turn off the hide extentions for known types first.
in an Explorer window- select from the tools menu - folder options - there the Tab: view and in the Advanced settings (scroll down a little) you can see the checkbox "Hide extentions for known file types"
you can do a little test to rename the extention to NXT first and check if the Icon changes, if so you are changing the correct part of the filename
Regards Martyn