I am at the part where I use Ralf S. Engelschall's bash script. I saved it in /usr/local/bin but I do not know what it means to make it executable by chmod 744. So I skipped over it. I typed in the following :
sign.sh server.csr
and got :
bash: /usr/local/bin/sign.sh: Permission denied
I'm signed on as root, so shouldn't it work?

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"The most abundant element in the universe is
hydrogen, then second is stupidity."-Harlan Ellison
"What good fortune for our governments that the
people do not think."-Hitler

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New error!
So I went here. http://sourceforge.net/project/show...p?group_id=5624
And downloaded libpng-1.2.5.tar.gz.
I did tar zxf libpng-1.2.5.tar.gz and it made a folder in my root folder. Is that all I have to do? It still doesn't work after doing this.

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In that folder, there should be a configure script.

'cd ~/libpng-1.2.5'
'./configure'
'make'
'sudo make install'

And it should be fine from there. Although I would recommend using the install RPM for your distro, as installing by hand could cause some issues on down the road.