after a long research [15 minutes! ] i have discovered that when you register EDONKEY/OVERNET it tries to connect to the OVERNET official site to validate what you have typed.
If you block this access, it does I don't know what, but the ADs disappear,
and after all, this is what REG is for, isn't it?
So, edit (with Notepad) your hosts file [found in :\WINDOWS\system32\drivers\etc\] and add theses two lines:
If it doesn't work reboot your PC
clarified by A Homeless Person