Oscommerce Backup All Store Files To Zip

I've installed the Backup All Store Files In Zip Format contribution. Contribution is found here: [login to view URL] The current version places all data in memory b4 compressing to zip file. The problem is if you have a large store with lots of images, clicking on 'Click to save a copy of all store files' results in a blank page becuase the server runs out of memory. I have tested this to 1024. It's possible to bypass folders but i'm looking for a service provider who can make this work without placing all the data in the memory 1st. This would need to work with image folders over 7 gig in size. This should be an easy project for someone, the project will be awarded to the service provider who can complete the project in as little time as possible with the smallest budget.