Customization

Hi guys, i need a little customization to my existing wordpress theme. you can see it in action at [login to view URL] what i need is post filter on the main page. people should be able to select the posts by category. what they will see then is the matching posts. those posts need to be in a certain order. my theme has a rating system built in, that also has variables we can use. ###the attachement shows the loop as it is performing on the main page right now. you will need to change line 25, so it does not show or link the category anymore, but the_permalink(). i need to display $omc_final_percentage and a "%" sign instead. next step is to built the "select category" button that is simply showing existing categories (by dropdown) that people can choose from. check attachment "[login to view URL]" to get the idea. it would be cool if the page would show the posts without having to click on "ok" or something after selecting the category. that is basically it. if you need further information, dont hesitate to ask thank you guys, daniel