Filtering posts per user via combobox

Hello there,
The project I’m a current working at requires to show every suscriber very specific content via categorized posts, and show this posts with a drop down list.

I’ve tried the User Specific Content plug-in to restric access and it works perfect.

The Drop-Down Post List plug-in did its job filtering categories and displaying posts but it seams asking it to filter by user was too much.

Can someone give me a hand locating the code I must update in the drop-Down list php file? (To installed this plugin i had to uploaded via ftp by the way.

Thanks in advance for any tips on this one.