Looks like it should work fine.
Usually best thing is to:
Power everything off
Connect CM to router with Rj45 cable (plugged into WAN port of router)
Connect router to a PC with another RJ45
power on CM (wait 30 secs)
power on router and then PC
Try browsing to
www.bbc.co.uk
If that fails, logon to the admin page of the router (manual should give default IP address of router, eg a Linksys is always on 192.168.1.1)
Router needs to be using DHCP to obtain an IP address.
Most routers will be working at this point. As this is an 'unknown' router, you would need to tell us the manufacturers website to look at the manuals if it doesn't work.
Once you have a working cabled connection, the manual should describe now to get the wireless working!