[Plugin: WordPress Popular Posts] How to add categorical most popular pages on category pages or sin

Does anyone know how to add a categorical most popular pages on category pages using this most popular post plugin..??

What i mean is that if someone visit my Single Post, then i want to show my most popular post based on category where that post is included. I also need this to display my most popular post based on category if i visit my category page.

The way might be like this.., but i dunno how to create it..

if (is_single) || (is_category) >>>> most popular post by category
else >>>> most popular post this day/week/month..

Please help me resolving this problem.., thanks

http://wordpress.org/extend/plugins/wordpress-popular-posts/