I don't think anyone in this thread did that, but it works like this (just tried):
1 set the download proxy to 127.0.0.1/12080 (this can be done on each download individually in FDM, so don't do that globally, you need ftp sites etc...)
2 add ProcessOptin=fdm.exe in Webshield.ini
>>> and then miracle the web shield scans fdm's downloads on port 80
(with the proxy setting only, the download won't even start >>> the webshield ini file modification is mandatory)