Small prob with internet connection using Knoppix..

Here goes, I am trying out the LiveCD of Knoppix just to have a play with it on my laptop. I have a wireless ad-hoc network here at home, where my desktop is connected to Ozemail ADSL and I use the WiFi to connect to it on the laptop.

The config in Windows XP on the desktop is 192.168.0.1, and the laptop is 192.168.0.4, I set the default gateway to 192.168.0.4 so I can connect to the net fom the laptop, and everything works well.

Now on Knoppix I have managed to connect the computers wirelessly as they can ping eachother,I used the same gateway as I do in windows, but I am unable to connect to the internet or ping any web pages from the laptop with knoppix on it, says something like no such host.

Is there anything I should know or try when I configure the network and wlcard next time I run knoppix that would let me connect to the internet?

TIA from a Linux noob.

Cheers
Fludey