Streaming Products Feeds

Hi,
Does anybody know where i can get hold of a programme or script that will allow me to automatically update all my product datase for zen cart my one of my suppliers offers a package called complete product synchro which will work with all shopping carts but is primarilly designed for oscommerce and creloaded of which they want to charge me £150.00 + £50.00 for installing the programme and then i have to find a programmer to redo the site integration page which is gonna cost £xx.xx so what would the point be.

Then my other supplier sends out a .asp file that will do everything with products and stock levels but i need to find out how to integrate it i've had a look at the add-on modules in Zen Cart but can't seem to find one that matches what i'm wanting to do.

Anybody got any suggestions?

Thanks in advance.:unsure: