I was able to upgrade to mozilla 1.4 with just rpms
Mostly you need to get perl and perl-base 5.8.1 rpms plus those libns rpms. This opens up a WORLD of dependency issues.
Whew!!! I got them all from
OR just keep fixing dependencies recursively until the perl and libns rpms go thru. Wish I could figure out how to get urpmi working
BTW, installing with the mozilla installer works too (I did that 1st) but you don't get anti-aliased fonts. A big thing for me.