LinuxQuestions.org - wireless-B USB network adapter drivers

I have three computers that connect to the internet using a Linksys router....I have Linux install in one of the computers with an USB wireless network adapter.....when I call linksys they told me that they don’t had the software to make the adapter work in Linux....I don’t want to connect the computer directly to the router with cable....is there any other way?!? Where can I get the drivers for the USB-adapter. I try to search but couldn’t find the right one.
I’m using Ubuntu. The access point is linksys wireless-B USB network adapter model no. wusb11v4.