The free ICS Control software can connect iPod or PC to Windows Mobile phone:
http://forum.xda-developers.com/showthread.php?t=962719

The latest ICS software can be downloaded from
http://forum.xda-developers.com/showpost.php?p=3067270&postcount=10

And follow the instructions from backupworth's posting.

For HTC Polaris phone running on Windows Mobile 6.1,
the Settings on ICS Control program need to be

1. First scroll down to the bottom of the Settings tab in ICS


2. Click on Set All Default button; that will set the Public Interface to Cellular Line


3. Scroll back to top of the Settings page and set Private Interface to TNETW12511 (or whatever device for WiFi)


4. Select a Private IP


5. Select Auto Connect to your cellular network, _MyDataService_


6. Save and Start ICS

Then configure the WiFi on your HTC Polaris to have a

1. Only computer-to-computer WiFi Network, create a new one for this cellular to WiFi network


2. Fill in a name for the WiFi network and set it connect to Work (internal connection)


3. For the HTC Polaris, I need to disable Data Encryption which is different from Step 6 of the Tutorial:
   http://forum.xda-developers.com/showthread.php?t=962719

Now start the ICS program first and WiFi ad-hoc network next on the HTC Polaris phone as Steps 9 through 11 in the tutorial:
http://forum.xda-developers.com/showthread.php?t=962719

Tell us your experiences of the ICS Control program on smartphones.