Error Code 20104 and 52000 Fix :
First the only version that worked for me is this
DeSmuME 0.9.7 svn3947 with WinPcap : http://www.mediafire.com/download.php?r80vhao950i8tgy
Now open your DeSmuME as administrator for Windows 7/Vista
As usual you will see this
What you gotta do is download...