DocDutch, that's an ADSL Router, no way will that work with NTL, ever.
However, the most reccomended router here is the Linksys WRT54G, which WILL work with NTL, and is as easy as plugging the cable modem (via ethernet) into the port labelled "Internet" at the back. Here is a link to the WRT54g -
http://www.dabs.com/productview.aspx?Quicklinx=2CM7