I've got ADSL connection here, I have this wireless router that I connect my desktop PC to it with a LAN cable and the laptop connects wirelessly (if that's a word).
Now the questions...
Can I do anything else with it? Can I set up a WLAN with the laptop and the desktop?
Can the laptop use the printer (which is connected to the desktop) wirelessly?
And if you have other uses I don't know about, tell me.

EDIT: And don't just answer "yes"! Tell me how or give me some URLs to online help!