try this, download policies manager from there:
http://kmeleon.swiftfree.net
after installing policies manager..open it from tools>privacy>policy manager
create a new policy. name it for e.g(popups allowed)
edit the new policy you've created(select policy>edit policy button)
for the new policy general settings>select the radio button"allow" for popups
then click add new site to this list(the policy you've created)
and enter pogo.com
click ok
enter www.pogo.com as well
restart kmeleon..see if this works