Hi,
Sorry for the delay…
In your sidebar.php file, search the HTML code that correspond to the <div id=”r_sidebar”> container, then delete the entire container. (from <div id=”r_sidebar”> to the </div> of the same level.)
Then, into your CSS file (usually called ‘style.css’)
Go to the rules called #l_sidebar and see the ‘Width’ attribute, put the value ‘350px’ instead of ‘160px’
and add the attribute ‘Height’ with the value ‘100%’
It should work, I’ve made some test on your website.
Otherwise, if you want make something cleaner, then you can replace everywhere the HTML code <div id=”r_sidebar”> by <div id=”main_sidebar”> and do the same into your CSS file, you’ve just to replace the rule #l_sidebar by #main_sidebar
Bye