Unfortunately, Windows 7 has No real "Tweakable" User settings.
That being said, you're not doing all that shabby, either.
Change your Connection: selection in the Tweak Tester page to "routerpppoe", and re-recommend.
To become "Pingable", check the settings in your DLINK Router to "allow Anonymous Internet Requests" ('Pings')... See your Router's User Guide for specific info.
If You're Unsure, "RTFM"... If You're SURE, "RTFM" Anyway.