You can find information regarding yum here:
http://www.terrasoftsolutions.com/su...eral/yum.shtml
You can modify how yum behaves by modifying the file yum.conf which
resides in /etc.
Wherever you find:
Yellow Dog Linux 4.x ...
replace that with:
Yellow Dog Linux 5.0
The mirrors which you should use are posted here:
http://www.terrasoftsolutions.com/re..._mirrors.shtml
from lists.terrasoftsolutions.com