I'm a newbie myself, so i cannot help much... I don't think u need to patch the kernel to install u'r card, unless it's not supported. 3com 2000 card? Haven't heard of it, can u be more spesific? Anyway, to unzip the file simply type: bunzip2 <filename>
If u're lucky u'll find some install info inside
...and, 'make clean' dont install anything. I believe that only resets all the configuration files so that you can use the configuration scripts to reinstall/upgrade an earlier installation.
Anyone with more know-how plz correct me if i'm wrong. Good luck