I'm using Mandrake 9.2 which comes with Mozilla 1.3. After some dictering around the plugin that worked was j2re1.4.2_01/plugin/i386/ns610/libjavaplugin_oji.so not the plugin in the ns610-gcc32 directory.
[user@localhost home]# ln -s /pathtoinstall//usr/java/j2re1.4.2_01/plugin/i386/ns610/libjavaplugin_oji.so /usr/lib/mozilla-1.3/plugins/libjavaplugin_oji.so
finally worked, typing about
:plugins (in Mozilla's address bar) show it's installed and a quick visit to Yahoo.com shows it works. Thanks to who ever for the thread.
Info about the differences of the two plugins can be found here http://plugindoc.mozdev.org/faqs/java.html#Linux
My problem was I just can't read or type properly.