Best way to get an xml fragment via http

Hi,

I am writing a dashboard like service which pulls xml data from a
webserver and pretty prints it nicely and does automatic updates. The
url to get the data is like http://192.168.3.90:22222/?action=agents

My view will have couple of periodically_call_remote updating some
divs, and in my controllers I need to fetch the xml data via http and
parse it and push it when the client requests.

I am looking for the best way to get the xml from the server to my controller.

Any help would be very much appreciated.

raj