Hey everyone;
Alrighty so i got a new wireless router and its been working great with my computer and labtop;
I went on my xbox and connected to it and that night it worked great!
Next day however my Live didnt work; Its pretty weird and i need help;
Ok so when i scan for a network i find mine and connect but when i test xbox live this happens:

X-Box ----X--->My Network------->Internet--------->X-Box Live

I cant even connect to my network; But i can connect to it when i search for a wireless network;
Whats going on? I have manualy added ip address and such but it dont work!
I dont get how one day it works and the next it doesnt; Whats going on?

Thanks for your help!

Configuration: Windows Vista Internet Explorer 7.0