ndiswrapper package is included in SUSE distributions, I believe. You should check Suse documentations for installation instructions specific to your distribution. There should be an .rpm package available.
The generic ndiswrapper instructions are pretty good as well:
Basically you (probably) need to install the package, compile it, load it into your kernel. You also need to get the latest Windows drivers for your wireless NIC because that is what ndiswrapper uses. The ndiswrapper docs cover how to do this.
You'll need to do all this from the command line as root, either logged in as root, or using sudo.
The wireless NICs are not quite plug and play in Linux yet. But it can be done - hang in there.