406777 Custom Wordpress Plugin

I run a website on the Wordpress blog(self hosted), and I would like a custom plugin built that automates some of the things I setup in each post. I assume the script will need to be ran when a new Wordpress post is published(I don't mind a SHORT delay when I hit publish and when the post is online, but the rest of the website needs to be accessible while the script scrapes data in the background). I review iPhone, iPod Touch, and iPad applications available in the Apple iTunes App Store. Usually when reviewing an application I have to manually pull screenshots while using the app, import them, upload them via wordpress, etc. Then I have to find misc. data about the iPhone application(developer, website, direct link to the app, etc). INSTEAD. . . I want to be able to type up the review(text only), and have a special custom field where I only input the URL(or name) of the application). So when I hit publish, it will activate a script to access iTunes, pull this misc data, screenshots, etc. . .and insert it into the top of the post) I also use LinkShare's affiliate website to earn a little extra money, and again. . .I would like this to be entirely automated. So instead of me having to login to linkshare, generate my link, and then add it to the post while I'm typing up the review. I want the script/plugin to do all of this when I hit Publish. BTW - Links generated by LinkShare MUST be cloaked before inserting it into the post. Data taken from iTunes needs to be inserted into the post of the post(like I said), but also needs to be presentable and 'fit in well' with the design of my current Wordpress Theme. Ask ANY questions via PMB because I will only pick a developer if I feel they can do this entire project(I will personally be asking specific details via PMB before choosing a developer).