Happy to tell that it is sorted now. First option didn't fix it, but using the switch I got it to work perfectly. thanks again!

@Alexandre. Thanks for your suggestions. I'll try the access point option first and if it doesn't work I'll try the switch. I just happen to have one lying around, but didn't think the decos would be...

Let me start by saying I do not know a whole lot about networking. I will try to explain the setup and issue as good as possible. The internet enters my house and goes directly to a modem router....