Note: The namecoind file will only open and have a flashing underscorer "_". You need to open another cmd prompt to type in the configuration, or the "namecoind getinfo" command. You have to cd to the directory first. If this is your first time using cd (change directory) then I would research it first. For instance mine is in a folder on the desktop so I would type "cd \Users\Username\Desktop\NameCoin"
Then you can type in the namecoind and the other commands (type "namecoind help").
Everything he said and;
If you are able to create a bitcoin.conf file with proper file extension you can do the following;
In the same directory as your namecoind make a new text file. In it include only the following one line;
cmd
Now save the file as "namecmd.bat" and in the future when you run namecoind, you will then just run namecmd.bat and already be in the correct directory/prompt to run "namecoind" commands in. Its not much but will make life easier for anyone not accustomed to using cd to a bunch of long name directories.
Cheers