XML Web Service Reader

Hi I need a small module developed to run a process running at every cron job (or which can be sheduled) to import data from an XML web service page into the DB of my website.

There are 3 webservice data pages, which will require 3 tables on the db. Full specs available.

The three pages contain the following data in XML

Page 1: the static data of the subject, for example, about user John and Mary.
Page 2: contains locative information about John and Mary, where are they now
Page 3: contains the counter defining the total number of records in Page 2

Hence to import the data, the module should
- Define 3 tables, Users, LocativeData, Counter
- Create a process that at each cron job that reads the position data with the counter set to the previous run, and then stores the new counter.

Once the data is imported:

- I want to publish a node with John and Mary's progress, i.e. sort users by miles covered since start.
- Convert the data in a given format and email it to the users.

I can pay for the development.

Cheers,
Marco.