According to the documentation, that should work and not so hard to setup.
1. Let Yammie work in "MIDI Remote" mode, user guide from page 155 describe the procedure. Select "Sonar 1.0" as the sequencer (does not really matter, if the rest does not work, try something else... except ProTools).
2. It will be nice (while not required) to check your Windows computer receive MIDI events. If you have and used some monitoring tools (f.e. MIDIox), that will be quick. Otherwise at least look at Sonar MIDI indicator in the Windows task bar while moving faders (MIDI port should be enabled in Sonar). To check what exactly is transmitted, enable corresponding MIDI port in Sonar and record it the same way as you will do with keyboard. If you see MIDI clip is created (you can check the content with Event List since probably they will be no notes, at least from faders), everything is fine. If nothing is recorded/transmitted, return to (1) and check settings on Yammie
3. Insert "Generic Control Surface" plug-in in Sonar Control Surfaces, follow Sonar Reference Guide (or one of many Youtube videos / test guides about it, for any device). You should get faders, transport and select buttons operating this way.
If can can not manage that... but you have (can install) TeamViewer and Skype on your DAW computer... and you have 30min - 1hour of time which intersect with something reasonable in GMT+1 time zone, I can help with setup.