R&OS;PDF Generation Library with CodeIgniter

[eluser]CARP[/eluser]
Hi guys
I'm using this library to generate pdf documents with codeIgniter
http://www.ros.co.nz/pdf/

The problem now is that I have to generate a complex document (see attachtment image)

R&OS;pdf library has lots of functions, and its documentation is good, but:
- I don't know how to create text in the place I want (coords.), not only left, center, right, justification
- Overlapped text
- Borders (I guess I have to manage to do this with ezTables)

Can any1 point me to some sample code, or recommend me a good library like this one with easier API?

Thanks