I need to set up a Netgear WPN824 RangeMax Wireless Router for wireless ADSL
access but have got a USB interface modem by mistake instead of the required
ethernet one.

I have got a Draytek Vigor 2600 that is a modem/router combined. If it is
possible, how would I configure the two to work so that the Netgear Wireless
router uses the Draytek as the internet connection device?

Any help greatly appreciated!