http://www.demopad.com/forum/viewtopic.php?f=7&t=31
The command takes time to work.
It's a delay of 1-5 minutes until my HTPC turns on.

I replaced my mac Adress to the code 16 times.
\xFF\xFF\xFF\xFF\xFF\xFF\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00\xmy\xIP\xad\xre\xss\x00
I try to Set the IP Adress of my HTPC (192.168.0.10) and 192.168.0.255
UDP, port 7 or 9 and delete the command suffix.
On my mac i have the tool "Wakeonlan", it works very well.