>I have a customer that wants to have all the data in one of those places that gives free storage on the web, and being able to access the data from his computer anywhere (without downloading first). Is that possible ?. Thanks

I don't see how. I have recommended some of those free sites before as a storage medium (my Uncle is in the antiques business and uses a near free one for storage of Jpeg's for ebay auctioning). The problem is that data can't be handled the same way that Jpegs or HTML files are handled. Jpegs and HTML are rendered automatically by the browser, data must be access via some data source on the server holding the data. Hope this helps.