installing wireless network adapter or driver

> hi
> i have just installed microsoft XP pro on laptop and when it competed i
> went
> to go and connect to my wireless network and there as no option on the
> networking page to connect. i have tried guessing and downloading drivers
> but
> nothing seems to work. I can connect ot net via lan cablbe but really need
> to
> get the wireless working.
> can anyone please help me on how to either download a driver that i can
> use
> to connect to the router i have.
> my laptop is a fujitsu siemans amilo pro.
> hope someone can help