Check your DNS server address on the windows side (ipconfig /all). Copy it to an uncommented line in /etc/resolv.conf. (eg nameserver 101.102.103.104). You'll need to be root to edit this file. If you are unfamiliar with unix, I suggest you use the "mcedit" editor. BTW you should have gotten this parameter automatically just like for your dynamic IP, but hopefully that should be all you were missing. Please report back.