Where? When? To do what?
So why put Rss in your title?
As far as I can recall there is no extension for 3.2.1 that will do what you want - you will need to request one.
I have told you - YOU will need to request an extension to do this and then you will have to wait to see if anybody is willing to create it.
No - you need to request an extension in the Extensions Request Forum