I really want to use WP 2.7 as the base for a brick/mortar store's website. I will need to customize the CSS and all the files (obviously). The index.php will be the main page of the site - (eg. http://www.some-stores-site.com/index.php) showing the WP blog. But I will be adding other pages with links from the index page's sidebar. (eg. http://www.some-stores-site.com/about.php or /products.php or /workshops.php ...) thus creating a site with lots of pages outside of a basic WP install.
Question: having never customized WP, or in this case upgraded before... what happens when WP 2.8 comes out? Can I just auto upgrade one click, or will all my custom code be wiped out? Am I essentially playing around styling a theme that won't be affected by an upgrade, or by changing the code in index.php, sidebar.php, header.php... and so on - asking for a nightmare in the future? Any ideas/suggestions?
Thanks in advance,