We have a 2830n installed with 1 ADSL connection and have an internal Wifi Setup. We wanted to setup a public wifi hotspot but not allow people to see our internal network. I can setup the second SSID but can I do give them direct internet access without seeing our network with just one ADSL or do I need a second one?

I'm on a 2820 so if I'm slightly off then that be why but I think you just tick the two isolate checkboxes next to the public SSID on the general wifi page. You'd need to give it a thorough test though it is supposed to be able to do it.

Have a look under the wireless section on the forums, there are about a BAZILLION questions like this and explanations on how to configure.

Hi,
This is what I used

http://www.forum.draytek.co.uk/viewtopic.php?f=19&t=16509