Networking :: tellus c130 802.11b wifi card?

No, don't compile the linux-wlan-ng package, it's already there. DSL is a small distribution ... if you want build tools, you need to install the gcc dsl package from the download section.
And now that I think about it, some diagnosis is probably in order first - run lsmod before inserting your wireless adaptor. Take note of what's there.
Then insert your wireless adaptor and run lsmod again. Hopefully you will see a driver loaded ... and I suspect it will be prism2_cs (the Prism2 pcmcia driver).
(If it's something else, hopefully you will now know what driver is involved and then find out how to configure it.)
If prism2_cs is listed, or nothing at all, just follow the instructions I gave above. The Prism2 button in the DSLpanel launches a somewhat lengthy script which will configure your wireless connection.

original here.