There are plenty of scrips around to grab all sorts of info, this one may have something you're after
Dear Forum, We are in process of creating a tool which will collect all the server information in an excel sheet, we would like to add the warranty details as well while capturing the information. when we put the service tag in the warranty status web page we get the details about the device. Do dell can provide the plugin so that we can add that in our script. Thanks Syed Abdul Kadar M.          
Warranty Status Using Script.