Installing Debian on the G1 (not Magic but may be useul)  - http://www.saurik.com/id/10

Nice review of Magic - http://www.arbitraryuser.com/blog/2009/07/06/htc-magic-android-review/

URL's regarding upgrading to Hero / Sense UI

http://www.arbitraryuser.com/blog/2009/06/20/rooting-a-vodacom-htc-magic-and-upgrading-the-firmware-in-south-africa-to-get-android-market-and-more/

http://www.howardforums.com/showthread.php?t=1545226

http://radixgadgets.blogspot.com/

Please post if you get Hero running.