First of all, you should look at some help sites like this
http://www.saragossa.net/LinuxG3/ls-wlan.shtml .
Secondly, I am not familiar with Yellow Dog at all, but if it is really based on Red Hat and you are feeling adventurous, goto:
http://prism2.unixguru.raleigh.nc.us/ and install the rpm's.
My reccomendations would be to use the files you downloaded from the linux-wlan project. That is almost sure to work.
I am going to give you instructions to install the tar.gz files. I will assume that you are a complete newbie and know nothing, so, if you're not, then bare with me.
1) cd into the directory that you downloaded the tar.gz file. cd is a command that puts you into the directory that you are working with. as an example, if you downloaded it to /home/espo/linux-wlan.tar.gz then type
cd /home/espo
into a shell and hit enter to cd into the correct directory
2) Now that you are in the correct directory, you need to decompress the file. to do this, type in
tar -xzvf linux-wlan-ng-0.1.13.tar.gz
(or whatever version of linux-wlan you downloaded). You will probably see a lot of text come up. Don't worry about it.
3) Now, open up a window and go to the directory that contained linux-wlan-ng-0.1.13.tar.gz and you should see a new folder created (probably called linux-wlan or something of the sort). Remember its name, and cd into that folder ie, if it is call linux-wlan
cd /home/espo/linux-wlan
Note: You don't really have to use the complete path name, but you do if you accidentally closed the shell, so just do it anyway to minimize problems.
4)Now, in the same shell that you just used to cd to the correct folder into, type
./configure
and then hit enter. You should see a bunch of text fly by really fast, don't worry.
5) Now type
make all
and hit enter. Then type:
make install
and hit enter.
6) If you encounter any problems, check the README that will surely be included with the linux-wlan project. If it gives you directions that differ in ANY WAY with mine, use their directions.
7) Edit the /etc/wlan.conf file, and any other files linux-wlan might tell you to after it is installed. Make sure wlan0 is aliased correctly in the /etc/modules.conf file. You should see something like this:
alias wlan0 prism2_pcmcia
Note: I am not sure what the correct driver is (I used a pci card, so I could be wrong here).
8) If you are still having troubles, read some documentation from
www.linux-wlan.org , or ask me and I will do my best to help.
Happy hunting!
~Andrew