There is a new hack available from XDA-Developers forum allowing you to use your Windows Mobile 6 Pocket PC device as an ad-hoc WiFi WLAN Access Point for your desktop computer. As you would know, Internet Sharing is a new utility in Windows Mobile 6 that allows you to share your Pocket PC’s internet connection using Bluetooth PAN profile. With this hack, users would be able to use the Internet Sharing utility over Wi-Fi WLAN.

Instructions:

+ Goto Start—> Programs—>Internet Sharing. Enable Internet Sharing for Bluetooth PAN.
+ Using a free registry editor, change HKLM\Comm\ConnectionSharing\PrivateInterface to “TIACXWLN1″ (current value would be “BTPAN1″).
+ Goto Start—> Settings—> Connections -> Wi-Fi , select the Network Adapters tab and choose IEEE 802.11b/g Compatible Wi-Fi.
+ Enter an IP address 192.168.1.1 and a subnet mask 255.255.255.0. Click OK.
+ Select the Wireless tab, click on Add New, enter the Network name for your ad-hoc network and make sure to select “This is a device-to-device (ad-hoc) connection”
+ After clicking Next, you can set up whether you need encryption (WEP or WPA) or not. If not, just set “Data encryption” to “Disabled”
+ Now from the list of available network connections, select the newly added network and click Connect
+ From your desktop client or another mobile device, search for this ad-hoc network and start using the WiFi

Note: By default, Internet Sharing reverts the Registry to “BTPAN1″ when it’s connected. Therefore, you need to manually edit the registry each time and change the value to “TIACXWLN1″