I have just replaced my broadband wireless router with a Linksys WAG200g. I can connect to the internet fine and access most sites but can no longer reach hotmail, myspace, Internet banking.
I suspect that I may have an incorrect setting or that something has changed in Internet options.
It depends how you cant reach the websites. It will be one of two things dns or MTU. If it cant find the pages then its dns you can test this by opening a cmd prompt and ping the website by name if its replies then its not dns. If it says domain not found then its dns change the dns on your pc to plus nets dns.
If it finds the page and trys to load but sits there forever then its the mtu and as you have changed the router look to the rooter mtu settings first. You should try setting it to 1500 or auto first and then go down to 1492 and see how it goes(you may need to reboot your router).
If this doesnt work tell us more about the problem