Get Magento products to be on Google Shopping.

I have a single Magento installation with two stores in it. I need all products from both stores added to Google Shopping. I have gone through the set up at google merchant account and am at the point where you need to enter a "Data feed filename" and I need help generating that file. It should be in the googlebase format probably. If you have experience with this, please let me know, I know the project shouldn't take more than an hour, but I am really stuck and need help. Thanks for looking. I will make escrow as soon as the winning bidder accepts the job. This is a repost because last time I selected the price bracket above this one by accident. This should probably be no more than $30-$50 worth of work. It's just a file generation I believe.