This hint is based on the 10.4: Add Nokia 9300 iSync support hint...
To enable support for the Siemens S65 in iSync 2.0, add the folowing lines to /Applications: iSync.app: Contents: PlugIns: ApplePhoneConduit.syncdevice: Contents: PlugIns: PhoneModelsSync.phoneplugin: Contents: Resources: MetaClasses.plist:
<key>com.siemens.S65</key>
<dict>
<key>Identification</key>
<dict>
<key>com.apple.cgmi+cgmm</key>
<string>SIEMENS+S65</string>
</dict>
<key>InheritsFrom</key>
<array>
<string>com.siemens.S5x</string>
</array>
<key>Services</key>
<array>
<dict>
<key>ServiceName</key>
<string>com.apple.model</string>
<key>ServiceProperties</key>
<dict>
<key>ModelName</key>
<string>S66</string>
<key>PhoneIcon</key>
<string>SIES56.tiff</string>
</dict>
</dict>
</array>
</dict>
[robg adds: For more detailed instructions, see this hint as well.]

