I need to make space available on my MacBook Pro. 

Here is what I tried: I accessed the individual albums, clicked *Select All* then clicked *File → New album* on the iMac. It transferred the photos but no keywords or descriptions. 

How do I transfer the entire iPhoto library with keywords, events, albums and info intact, from a MacBook pro using iPhoto 08 to an iMac using iPhoto 11? 

Please be (step by step) specific.