Custome reporting in Oscommerce

Although I have a well developed installation of oscommerce it has some limits to the reporting functions which I'd like to address. The modifications required I hope are simple enough. The data all exists, it's just being able to slice it, display it and export it from the reporting suite that I need. 1) To be able to look at product data, individually or against each other by selection, across a custom date range, as well as the default of a calendar month. Data that is needed from this: a) number of times viewed b) number successfully purchased c) value of sales in £ d) option to make comparison of a,b,c from the same date range period 1 year previously e) export as csv of this report (and in fact any others from the reporting suite - see screen grab below for a shot of how it looks currently) 2) Monthly report - an automatic report generated and ideally (but not essentially) e-mailed to me to include a) total value of sales exc tax in £ b) total tax on sales c) total untaxed sales (as outside EU sales attract no VAT) d) number of items sold e) number of orders f) average order value in £ g) number of visits logged h) average value per visit in £ i) list of top selling products in order by value £