Motorola Defy :: 3G Mobile Hotspot Alternative For Creating WiFi HotSpot?

I was always using on other phones with Android 2.2 FroYo that 3G mobile hotspot feature, which was included right in the Android system under Wireless Networks settings.Now in Defy there is no option like that under settings in FroYo. Defy includes own app called 3G Mobile Hotspot, which should work like that option for creating mobile WiFi hotspots in other Android phones. But here is the problem.On my older phone with Android 2.2 I could create 3G WiFi hotspot wherever I needed and it worked. But now, with Defy, when I use that application 3G Mobile Hotspot, it writes me error when creating WiFi hotspot "Cannot set up data link, please contact your service provider" I suppose it is something with my carrier (Vodafone_CZ), but when I used 3G WiFi hotspots on older phones (which had that feature included right in Android settings menu) it worked without problems and I a used mobile phone for 3G internet sharing with my laptop.Now I remember, that I have deleted some DUN profile under APN Internet profiles, could it be that problem, that 3G Mobile Hotspot app is not working?how to create WiFi hotspot on my Defy for example with some other app?Or if not, how can I use Internet Tethering in Defy Mobile Networks menu via Bluetooth (my laptot has BT). I dont know, what should I set in my laptot to use Defy like BT 3G Internet provider and I dont know, if Internet Tetherig via BT is not charged at my carrier (I know, that the 3G WiFi hotspot feature was not extra charged..) so for that reason I would like to make it working on my Defy.

My ROM: original 34.179.2.MB525.Retail.en.CEE
Android 2.2.2