Using Excel as a Datasource

I created a report that will use Excel as a datasource. The report runs fine from my desktop. I would like to place this report on the Business Objects Server. Can anyone tell me what I would need to do in regards to the excel file.

In addition to this issue, when I moved the excel file to a shared folder and reconfigured the system dsn, the report would not run. I received an error message: could not decrypt data. Any help would be appreicated. Thanks.