Hey, I have begun learning how to develop apps for Symbian, and when I compiled my first app and put the sis on the phone, I got a message when I tried to install it that say I am missing "Series60ProductID". How can I acquire this? I guess it's the same as having that P800 file on the memory card for installation of P800/P900 apps...

I am using Symbian 6.1 SDK, because a tutorial I read on C++ BuilderX from Borland used that SDK, and I never got the UIQ one to compile correctly (I probably defined the wrong SDK configuration for that one...).

As the A920 is an UIQ phone, so for it you need to use the UIQ SDK to develop your apps: http://www.uiq.com/uiqsdk

The Series 60 SDK is only for Series 60 phones and Series 60 apps won't run on an UIQ phone (unless they only use core Symbian OS features and no Series 60 specific calls/APIs at all).

Yes, gotten the UIQ SDK, which I think I will settle with instead :)

So there is no way at all to run S60 apps on UIQ? Not even with the help of some emulator thingy or something?

No way whatsoever.