Upgrading Drupal

Drupal 5.0
Configuration file Protected
Cron maintenance tasks Last run 42 sec ago
You can run cron manually.
Database schema Up to date
File system Writable (public download method)
GD library bundled (2.0.28 compatible)
MySQL database 5.0.24
PHP 5.1.5
Unicode library PHP Mbstring Extension
Web server Apache/2.2.3 (Win32) PHP/5.1.6

When i enable cache i was always having problems, before It just use to get page can not be displayed (only when i log off and click on a link a second time. ) so i disabled it till i got the other modules working, And now its about that time... sessions-singlesignon- and multidomains seem to be working when cache is disabled but now instead of getting the error message "page can not be displayed" I get the following scripting error

Error:

Notice: Undefined index: HTTPS in C:\Program Files\Apache Software Foundation\Apache2.2\htdocs\allensworld\modules\addmodules\multidomain\multidomain.module on line 277

Notice: Undefined index: http://www.allensworld.org in C:\Program Files\Apache Software Foundation\Apache2.2\htdocs\allensworld\modules\addmodules\multidomain\multidomain.module on line 278

Notice: Undefined index: HTTPS in C:\Program Files\Apache Software Foundation\Apache2.2\htdocs\allensworld\modules\addmodules\multidomain\multidomain.module on line 301

I have a problem and some questions.

1) My question is with this module will i be able to have a totally new layout (Differnt banner and everything) using mulidomain?
2) How do you delete a domain you configuired that you do not want anymore?

When i enable this module and add another domain it seems to want to change every link to both domain together example (http:www.allensworld.orghttp://allensworld.org) only when i check force defualt domain in the configuration

I'll try to explain this the best I can. I've got a taxonomy term
'Dinosaurs' for a site I'm working on:
http://beta.menashalibrary.org/taxonomy/term/6

When I was running 4.7.4, that page showed the full entries for each
page containing the category of dinosaurs. Since I've upgraded to 5, I
noticed that all the entries are truncated and have a 'read more' link
on them.

I am trying to move from WordPress to Drupal 5.0. I did the following.
1. Install Drupal 4.7.5 via cPanel
2. Import WP using Wp2Drupal with no apparent problems problems
3. Updating to 5.0 failed with the following error:

Fatal error: Call to undefined function: menu_rebuild() in /home/zunebuzz/public_html/drupal/modules/system/system.install on line 3268

Did a some of looking around and couldn't find menu_rebuild anywhere. Searched the forum with no luck.

Bit of help please.

I had installed Drupal 5.0 rc2 on a site, http://gs18.inmotionhosting.com/~greenl7 . When I uploaded 5.0 and went to update.php, I was shown a blank page.

How do I get around this?

The "Read More" link doesn't seem to really know when the post has ended. I have the automatic break set at 800 characters. If the entire post is close to that, but still short of it -- it still says "read more". This is, of course, confusingn to readers since they click "read more" and all they get is the same article on its own page, but not a byte more of content.

I'm using Drupal's "Chamelion" theme.

Ideas?

Shai