[advanced guestbook] installation unresponsive

I have installed (I used the guestbook.sql script to setup the database gb22 and all it's tables) Advanced Guestbook 2.3.1 and none of the actions produce any results.

For example:
1) if I go to "guestbook/install.php" and fill in the fields then click "create table" the fields just clear out and nothing seems to happen
2) if I go to "guestbook/admin.php" and enter test/123 the fields just clear out and nothing seems to happen
3) if I go to "guestbook/addentry.php" and fill in the fields and click "preview" the fields just clear out and nothing seems to happen (same behavior if I click "submit")

What could be causing this?

I'm using
PHP 5.0.3
Apache 2
MySQL 4.1.9
Windows XP Pro
and I have tested that php CAN interface with the database

Curious as to why you are using PHP 5 and Apache 2

Last I checked these were both beta releases.

It's too tempting to get comfortable with what's familiar. I had a version of emacs I was using since sophomore year of college and I was scared to upgrade since I use it so much and it works fine.

Upgrading wasn't bad at all.

Since I know a thing or two about computers, I figured I'd try to not be afraid of keeping all of my software up-to-date.

Neither version of PHP 5 nor Apache 2 that I'm using is in alpha testing so I don't see it as a huge risk. Further, I'm hosting a website as a hobby so I don't have much on the line (I won't miss out on thousands of sales if my site is buggy).

If I run into a problem caused by a bug in the version I'm using then, at that time, I can choose to downgrade if I must.

So if people's lives depended on the reliability of my system, then I'd probably stick with the most stable software versions available. Since that's far from the case (for me, at least) I don't at all see a problem with using PHP 5 with Apache 2.

Lastly, every once in a while--perhaps even right now with Advanced Guestbook 2.3.1--I can do my part to help find bugs or compatibility issues that developers aren't yet aware of.