>
> If this is so will an ordinary wireless router do the job with my
> Speed Touch ADSL USB modem, or would i have to replace it with a
> modem-router.
>
You can get a ADSL modem that uses a RJ45 connection and not USB may be
the ISP can replace the USB one or you can buy one that uses the RJ45
connection just make sure it's a modem that's approved to run on the
ISP's network.
Then you can buy a standalone ADSL wire/wireless Access Point NAT router
that uses RJ45 and connect it to the modem and be done with it.
http://www.homenethelp.com/web/explain/about-NAT.asp
Wireless and ICS is suspect to say the least about it.
Duane :)