Ndiswrapper is a program to use windows driver for
wireless cards that have no linux modules available.
Here is a tutorial:https://vector.ecosq.com/ic/HowTos/HowToBook/ChapterWireless
That is a nice howto.
You can also follow the directions for ndiswrapper here:http://sourceforge.net/apps/mediawiki/ndiswrapper/index.php?title=Main_Page
PLease not that there are some suggestions for troubleshooting at ndiswrapper site.
Wicd is a tool to setup wirless networks after the hardware is setup, not to configure