that lsusb is the command you need to use. So pop open a console and use su -
to become root. Then enter in lsusb
and have a look at the output. You could also use lsusb > filename.txt
to save the output to a file (in this example, filename.txt). That tends to make for easier viewing and you can then cut and paste if you want to post any sections.
You might be able to use the linksys drivers in conjunction with ndiswrapper. Since ndiswrapper is built to use Windows drivers, the fact that it works in Windows may mean that those same drivers will work with ndiswrapper. You can't really tell what chipset it is from the Windows drivers, particularly with Linksys. Then tend to change chipsets every card version or two.
Ndiswrapper itself is actually very easy to install and use. Have a read through the wiki
for excellent installation instructions and help. You just have to be sure that the source code for your kernel is installed. If you have RH9 CDs, the source code should be on one of them.