ok i noticed that it was all broken 2 minutes ago :(
yes there are a number of things there and if you don't have a grasp of css it might be complex.
if you look at the original code of your right.php this is defined at the top:
the css contains the definition for the two and it is very much a fiddling with details job and even then you might need to hack it for different browsers... a good place to start with a guide on the three columns is here:
basically you need to ensure that the main container (currently 980px) really contains the three sections.
divs are like boxes and their positioning is relative to the big container. another thing that might put you off is the fact that files are included in various ways. the full sequence is :
- index.php or page.php
as you will see, the left.php and right.php are called in both index and page.
what is peculiar of the theme is that the search is in a separate php file so you can try to fiddle with its size in the css. the searchform is called in the header.php
hopefully this should get you started, but i'm not sure if theme design details are making this post off topic