Create caller code for Aqua-Resizer (thumbnail resizer) on Wordpress

To grab and resize thumbnail, I use aqua resizer from this link: [login to view URL] Call the thumbnail to show with this code on the loop: <img src="" width="150" height="700" alt=""/> It is working well. But only for feature image. I want to set the caller not for feature image, but also for first post image. So when I forget to set feature image on my post, the first image will show up as the thumbnail. The code must be similar like this: if(has_post_thumbnail()) { // resize post thumbnail here e.g. $img_url = aq_resize... } elseif($first_img) { // resize the first img here, $img_url = aq_resize($first_img, ... } else { // $img_url = ''; //empty } Here the clearly clue from the plugin's maker: 1. [login to view URL] Unfortunatelly, I'm not familiar with php. I believe, if you familiar with php and Wordpress, this project can finish not more then 30 minute. NOTE: 1. I only pay and give review after I check the finish work. 2. Ask if you are not sure for what I want. Regards,