Interested to see this open source solution being promoted ...

New service tracks missing laptops for free Researchers have developed a free open-source laptop tracking system for laptops By Robert McMillan San Francisco | Tuesday, 15 July, 2008

Lose your laptop these days and you lose part of your life: You say good-bye to photos, music and personal documents that cannot be replaced, and if it's a work computer, you may be the source of a very public data breach.

http://computerworld.co.nz/news.nsf/news/EC980DF9A9B079E6CC257486006F02AC

Michael