Yup, your almost there and there is nothing wrong with your KMS at the moment, it's just not activated yet. You need a minimum number of clients in order to activate the KMS server, for Office 2010 it is 5.

How many RDS servers do you have in your farm which need Office 2010 installed? If it's 5, just crack on and when the 5th is installed it will chug away quite happily. If you haven't got 5, if you've a couple of workstations you can install Office 2010 and get to activate via KMS to make up the shortfall from your servers, that will achieve the same result.

For reading if you want: Volume activation quick start guide for Office 2010