Template Editing
 

Hey is it possible to make some kind of modification that you install and its edit the template to add some things auto? So you don´t need to go into the style and edit again when a new version has come out..

Hope you understand what i mean..
sorry for my bad english..

If I understood you right, then yes, it's possible.

any guide or something that tell me how?

If there's a template hook available where you want to add some output, just add what you want to it:

$template_hook['some_template_hook'] .= $parsed_template_or_html_output;

You can also use str_replace or preg_replace to search for code within a template and add something before or after it.

For example
$vbulletin->templatecache['navbar'] is the navbar template.

If you give a concrete example of what you want to do, I can be of more help.