IMPORTANT NOTE:-
okayyy.... so I just got to know.. that
$inside=1 that enables capturing screens of inside URL's like
http://www.domain.com/website/ OR
http://www.domain.com/website/file.html is a
Pro feature BUT is currently free till June 5th, 2008 after which you'll have to remove $inside=1 as it won't work anymore from then onwards for free.
This means that URL's to
DOMAINS/SUBDOMAINS would work fine and will remain free forever.