just check out the database of whois, contact the owners if you really want these domains. NewDirectories.com - http://who.is/whois-com/ip-address/newdirectories.com/ iDirectorories.com - the domain is available! eDirectories.com - http://who.is/whois-com/ip-address/edirectories.com/
Judging by his other thread, I guess he wanted edirectories.com. Approaching the current owners directly would probably be his best option