REGEDIT4

[HKEY_CLASSES_ROOT\magnet]
@="URL:magnet Protocol"
"URL Protocol"=""

[HKEY_CLASSES_ROOT\magnet\shell]

[HKEY_CLASSES_ROOT\magnet\shell\open]

[HKEY_CLASSES_ROOT\magnet\shell\open\command]
@="\"C:\\Program Files\\azureus\\Azureus.exe\" \"%1\""