Rik,
I have now reinstalled my PCI network card and pleased to say that I am now getting the same speeds as with the USB connection.
You might remember, that with ZyXEL my speeds were slower using the ethernet cable.
In the "Device Manager" I have got the "Link Speed/Duplex Mode" set to "Auto" - is this correct?
If it works it must be. :) It's what I have set too.
Thanks Rik - I will leave as it is.
Nae bother. :)