google back links

[d6rth7ader]

I have a question on back links.
Should the back links from other internal pages to home page point to http://www.mysite.com/ or to http://www.mysite.com/index.php? Are both urls treated as one and same by google for the site’s page rank?
I think that the link text preferably be ‘Home’ as otherwise it could be confusing to the site visitors.

Thanks,