I finally discovered the easiest way to use your local time server pool to get the correct time on Suse 10.2. This procedure will probably work with other Suse's, and even with other distros. I discovered it while setting up my BT HomeHub, which is a Thomson SpeedTouch in a silly box, but it does have a VoIP phone socket, and an 802.11b/g AP.

In YaST select Network Services > NTP Configuration

Under Automatically Start NTP Daemon select During Boot

Select Run NTP Daemon in Chroot jail
Unselect Configure NTP Daemon via DHCP

Select Open port in Firewall

The click Advance

This page will give you the addresses for your local NTP pool servers

I'm in London, so I selected Europe then United Kingdom and got this selection:

0.uk.pool.ntp.org
1.uk.pool.ntp.org
2.uk.pool.ntp.org
3.uk.pool.ntp.org

If you only use one then use the bare address like this:

uk.pool.ntp.org

You have to add them one at a time. Use the test button to make sure they are reachable and respond correctly.

I started this investigation, because the list that is provided with YaST is wrong! The suggested server for the UK is gb.pool.ntp.org which doesn't exist.

I now have to find out how to do this on FC6 with Gnome.