From 1.0.0 to 1.0.5

[djmega01]

I know maybe someone else have asked this before, but I need to do it.
Just point me to where is what I need

Do anyone have a step by step on how to safely upgrade without causing any damage to the existing files, from version 1.0.0 to 1.0.5?

I saw this:
http://isp-control.net/ispcp/wiki/usage_...ll/upgrade

Is there any specific guide that take me from 0 to run the install script?

Yes I'm a linux newbie...

Thanks in advance!