Need help on the Portal Logged on Users Custom tool

Hello Everyone

I am trying to build a tool by following the below blog written by Micheal Nicholls,

Building a tool to monitor who is logged on to an SAP NetWeaver Portal...

can some body suggest me on how to start building this.

I am assuming I need to create two portal components and create an iview with the second component. so that it will fetch the users from the file wher the first component has placed on the temp directory. is it correct.

Do I just need to deploy the first component or do anything specific with that?

could some body pls suggest me regarding this. Appreciate your valuable answer.

Thanks

RIo