Very similar to the Google Gadget, there is a single URL that anyone can point their browser at to view real-time arrival estimates for any two stops in the Metro system.
http://smsmybus.com/kiosk?s=0100,0161&d=WORK,HOME
The two, four digit numbers after the 's=' string in that URL indicate the stop IDs to display. The two direction labels are optional, but if you include them, order matters. They should correspond to the stops listed.
Enjoy!