Add Plugin Rating to Category Pages

Hi there Freelancers, My website is almost complete, however I need a bit more customisation with the review/rating plugin I am using. The rating plugin allows the site owner and users to rate individual posts (both separate ratings). There is also a widget that displays these top rated posts. However it does not allow sorting by individual categories. I have 2 pages. One 'Top Rated Books', and the other 'Top User Rated Books'. The layout is all done, it just needs the post's rating over the image. It should be relatively simple for a Wordpress / Plugin expert! As all the code is there, it just needs to be called onto these pages. The posts are currently being displayed in a portfolio type gallery, so there will need to be a way to integrate the rating into this. This needs to be done as simple as possible also, no interfering with the rest of the website's layout. I don't want to have to backup all my work. This should take a short time to do, so I am not accepting high offers. Thanks a lot!