They also have a National WWII monument in the process on the internet, and those that are KIA are to be automatically added by the National Archives. You might check it out at this address : http://www.wwiimemorial.com/default.asp?page=home.asphttp://www.wwiimemorial.com/default.asp?page=home.asp
I added my grandfather on there, with a picture. His name was Kenneth Eugene Carlson of Kansas.
Another thing you might do, which worked for me, is to look up the county webpage on the net, througgh www.google.com or another search engine like this, and see if they have an email address for a County Recorder or Register of Deeds, and see if they have any sort of record for your uncle. If they do not, your best bet is through the NARA. I hope this helps.