XML Feed of Coords or TLE?

Is there an online source of ISS coordinates (2d - "point where the ISS
is currently overhead") or the TLE (Two Letter Epheremides)?

Although the coordinates would be easier for me to use, I suspect
sufficiently-accurate polling from only a handful of installations could
easily swamp the server. So a TLE that is updated every 24hrs might be
better. It means I would have to write code to convert the TLE into a
coordinate.

The best I've found so far, are sites like heavens-above.com and
http://spaceflight.nasa.gov/realdata...SS/SVPOST.html

Both would need to be screen-scraped - something I don't fancy doing, if
I can help it! An XML feed is much more preferable.

Apologies if this is an FAQ but I've done quite a bit of Googling and
although I've found a few web sites, most are down (eg. the NASA page
used by the Google Maps O'Reilly Hack) or would be difficult to use (eg.
screen scraping required rather than a simple XML request)

I intend to write a demo program from this. If successful then this will
lead to an article and the code being open-sourced.
The actual code that I wish to demonstrate has been written, but I'd
like a neat little application that is useful/interesting in its own
right! :-)


--
Richard Marsden
Winwaed Software Technology LLC
http://www.winwaed.com
Tools and Add-ins for MapPoint - http://www.mapping-tools.com