When I start install.php and fill in all required information and click [Install SilverStripe] after a few seconds I get the following error:

Building database schema... 
[Warning] date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Paris' for '1.0/no DST' instead
POST /silverstripe/install.php
Line 912 in C:\Inetpub\wwwroot\SilverStripe-v2.3.3\SilverStripe-v2.3.3\sapphire\core\model\DataObject.php

and in the source part the following line is colored:

912 				$this->record['Created'] = date('Y-m-d H:i:s');

and

Trace
date(Y-m-d H:i:s) 
Line 912 of DataObject.php 
DataObject->write() 
Line 934 of SiteTree.php 
SiteTree->requireDefaultRecords() 
Line 214 of DatabaseAdmin.php 
DatabaseAdmin->doBuild(1) 
Line 793 of install.php 
Installer->install(Array) 
Line 123 of install.php 

Inside php.ini, you need to make sure date.timezone is filled in. By default, it is not.

e.g.

date.timezone = Pacific/Auckland

OK, thank you, now I'm allmost there I think ...

My next thread: http://www.silverstripe.org/installing-silverstripe/show/274015#post274015