Originally Posted by lorimer73
How do I get Debian to read the interfaces file and / or how do I manually connect to my router?
The error looks like from parsing the file, not physically reading it. I can see no errors in the part of your interfaces file you posted. Look for the error in logs, maybe there are some more detailed informations.
Usually the easiest way to connect is by cable and eth0. Can you connect a cable between your computer and router?
Let us know what you got from ifconfig