Problem installing 3.3.0

[steinm]

Having install issues...

I have filled out all the server settings and click Apply. I am just sent to a page with the following:

letoDMS Installation for version 3.3.0
Warning
Pear package : HTTP_WebDAV_Server : Not found
=> Install Pear package 'HTTP_WebDAV_Server', if you intend to use the webdav interface
Warning
Zend Framework : Not found
=> Install Zend Framework, if you intend to use the full text search engine


What am I missing??

I'm sorry, but I don't know how to make this clearer. What exactly is so hard to understand?

Uwe