Upgrading Drupal

Greetings, I was hoping some of you brilliant folk could shed light on a monster of a website I've been tasked with updating. First of all, it's a Drupal 5 site so I'm in the process of upgrading but they need a new theme as well and I think the company that made it for them "learned" Drupal on this project so parts may be duct taped or glue-coded together. So... I'm wondering if there's a best practice for the way Quick Links are implemented per-page (Not sure what keywords I would even use to search for this).

Hello.. I'm trying to update all my modules, so that I can upgrade from 5 to 6. Some of my modules say "Not Supported" when I run status update. If I click on the link it shows the module available in 6, but no longer in 5. So what do I do? Just download the latest 6 version after I upgrade? Sorry.. newbie here. Thanks

Hi guys,

After an upgrade (among other modules, wysiwyg) TinyMCE does not show up anymore when logged in as super admin (first user created).

I just untarred Drupal 7.0, and tried it, and got:

Parse error: syntax error, unexpected '{' in /home3/orangepa/public_html/drupal-7.0/includes/bootstrap.inc on line 677

I did copy the settings.php file, and it changed nothing.

cp -piv sites/default/default.settings.php sites/default/settings.php

Any ideas, or should I stick with version 6.20, which did install and is running, apparently correctly?

so i was upgrading my site from drupal 6 to drupal 7. i followed the upgrade text and changed the settings.php file to allow free update but when i navigate to the file it doesn't seem to do anything and when i navigate to the site i get:

Notice: Use of undefined constant DRUPAL_ROOT - assumed 'DRUPAL_ROOT' in /home/content/t/x/s/txssp/html/includes/bootstrap.inc on line 2094

Warning: require_once(DRUPAL_ROOT/includes/errors.inc) [function.require-once]: failed to open stream: No such file or directory in /home/content/t/x/s/txssp/html/includes/bootstrap.inc on line 2094

Hello drupal forum,
I've never performed a drupal upgrade before, first off. Second, I need to change the theme of a website and figured that would be a good time to upgrade my drupal core to 7 from 6. What should I do to prepare? Since the theme is changing, the most important information is the form information, page content, modules, etc. Eh, I hope I'm not being too confusing...Any help is appreciated :)