Obtaining and sorting infromation from a website

As a hardcore Ebay trader, and ebay store owner I'm very busy. This project should save me time by allowing me to check out my buyer's credibility and immediately weed out users with a less-than-acceptable feedback rating. I also want to keep an eye on my competitors and favorite buyers and sellers. I need a script that allows to obtain from ebay and display ebay's user feedback in the following format: -User ID -Feedback score -Date of registration -Country of registration -Feedback as a seller -Feedback as a buyer -Date of last feedback received -Number of visible items on feedback page -Number of negative feedbacks -Number of items for sale User's IDs should be taken from a text file. Also there is a form for single user check. Acquired data should be displayed as table, where records can be easily sorted, for example by feedback score or number of negative feedbacks. Ability to turn on/off columns would be great. Sorted data can be saved to a text file. The script must be written in PHP, and must be fast, accurate and reliable. I don't have a set deadline for this project, but I would like to finish it within two-three weeks. If it can be done in a shorter period of time, so much better. Thanks and I look forward to receiving your offers.