Google Merchant Center Data feeds help needed please.

Hi everyone,

On my quest to generate more traffic to my site I have as part of a plan to use Google Merchant (was known as Froogle).

Basically you upload your items via a spreadsheet and people can compare items when they click on the shopping tab.

Does anyone use this? If so would it be possible to send me a copy of the file you use to upload?

I have spent the afternoon trying to upload files only to be met with errors each time and I cannot see where I am going wrong

Thanks in advance.