PHP programmer wanted for a small project

I do some web-design for my clients. One of them needs some additional service for which some PHP coding is required.
In short:
Customers order optical glass from a product catalog (I thought of setting up CubeCart) and send orders by filling out one or more forms. 1 form for each product (with various options). Shop owner receives orders and then types the data info a program provided by his suppier which generates XML file(s). He then sends a e-mail to his supplier with XML files as attachments.
The shop owner asks for automatization so that he will not have to type in data manually. I recon he needs a php code which will generate XML code in the same format as the program he got from his suppier and store these files on the server. He would then go to admin area on his web-site, confirm the orders by checking the files to attach and send e-mail to his supplier with all the attachments with a few clicks of a mouse once a day.
Anyone wants the job of making this add-on to CubeCart? Other suggestions are also welcome.

I cannot make you an addon of Cubecart but I can custom built it for you. Do you have IM ?