csv import for wordpress

I want to take a non functioning pseudo wordpress plugin and have the code amended so that it correctly imports data from a csv to the wordpress blog. The code should only need tweaking a bit to get this part working, it is an old piece of coding trying to use post_category instead of the new taxonomy system, everything works except the allocation to the correct category. Also would like the upload to be done from within the wordpress admin panel as opposed to externally which is where it gets done now. Each CSV file contains the fields Title, Description, Category, Image, Link & Price current code is attached.