Apparently that package is obsolete and FedEx is not assigning any new Meter numbers. The new service is called FedEx web services which has a different Oscommerce module.
The link for the module is:
You first need to login to your Fedex account and register for the webservices. They will then give you a new meter number with a password and key which you can enter in your module in Oscommerce.
I just installed it and it works great.