I have a 64bit desktop computer with a USR5417/BCM4318 wireless card (nowhere near my router) that I want to install Debian etch on.

I also have a laptop which already has Wi-Fi working

What I need to know is:
A. Can I use a network bridge to connect temporarily though my laptop's wifi and if so, how

B. If I cant do that, do I really need to burn all of the CD/DVDs. All I need to do is install NDISwrapper, the rest I can download.