You first need to find out which chipset it is.
A search on the list maintained at
linux-wless.passys.nl shows that its either a Marvell or a Prism chipset. I'm assuming its more than likely the Prism, but to be sure type the command lspci. It'll output a list of the hardware its identified.
In fact, go ahead and type iwconfig. If its a prism chipset then it should already be ready to use. So type iwconfig and see if anything has wireless extensions.