I am unable to access any of the internet features such as Netflix, Hulu Plus, etc. because of an error message that says: Connection status cannot be confimed. The service requested was not found. The server returned with the following reference code 300.

Hey Ralph, check out this link... it will answer a lot questions you may have..

Netflix vs Hulu Plus vs Amazon Prime Comparison

Judit,

We need ore information. Does the new modem you are now using have a built in "router"? If not, you had better reinstall your old router as when you just use a plain old modem from either cable or dsl your computer will be visible to the "low life hackers" out in the internet and it will be so easy to gain access to your computer and files it will and should scare you! Are you now using a router with your new modem? IF NOT, reinstall your old router with your new modem! The reason your not getting Netflix could be that the port settings on your old router will not be the same as the modem and if your new modem does have a built in router, you will need to "reconfigure" your Netflix with the new modem/router. The ports that your old router allowed access to Netflix will not be the same in the new router. You need to set this up yourself. Good luck.

Netflix is an online streaming service....this means as long as you have the internet and a smart box or tv or computer laptop or tablet you can use it to watch netflix amazon hulu etc.
it is better to use a cable (Ethernet ) from router to tv as opposed to wifi.without internet no netflix.

https://help.netflix.com/en/node/13815

do any of those work for your wii?

I have the same problem, but it's NOT netflix dawn or anything like that, because Pandora doesn't work either, or any internet services on my Sony Bluray player, so I know it's Sony Internet Services who refuse to connect to the internet, whats the problem SONY?