Permissions insufficient to perform this operation when attempting to deploy SSRS Shared Data Source

I'm attempting to create a couple of SSRS reports and publish them to a clients Report Server.

First I got an error:  
cannot deploy the report because the shared data source ... does not exist on the report server.

I found a reply to that which indicated that I need to deploy the shared data source before deploying the report.
I would argue that this makes no sense because that data source already appears to exist on our report server because other reports that work on that Server/database are working properly.  At any rate, I right clicked on the shared data source in question, selected deploy, and now I'm getting an error:

The permissions granted to 'client\userid' are insufficient for performing this operation.
1.  What permissions do I need to deploy this datasource?
2.  Are these windows permissions or something else?

This is all caused by my client eliminating my Citrix login and giving me a remote desktop login, I've lost some of my permissions and don't know what to tell them in order to get these permissions right.

Thanks,

Dale