Upgrading to AQT V3.0 from AQT V2.3 or V2.4
===========================================
The recommended procedure is to:
1. Uninstall AQT V2
2. Install AQT V3

Uninstall AQT V2
================
This step isn't essential. AQT V3 will still work if you don't uninstall AQT V2, however 
uninstalling V2 will keep your system cleaner, remove unused DLLs etc.
AQT V2 is uninstalled with Control Panel->Add/Remove Programs. Select Advanced Query Tool and
click on Remove.
You shouldn't remove AQT V2 after you have installed AQT V3. If you do you will need to reinstall 
AQT V3 as some critical files will have been deleted by the V2 uninstall.

Config Files
============
In AQT V3 the format of the cfg files has changed. The V2 config files cannot be used with 
the V3 executable and vica-versa. The uninstall / reinstall will update these. 
1. If you've moved the files elsewhere you will need to move across the new versions.
2. If you've made any changes to the config files you will need to reapply the changes to
   the new files.

Fallback to V2
==============
If you wish to retain the ability to revert back to V2, in case V3 gives problems, you should install 
AQT V3 in a different directory to V2. You should then be able to run either V2 or V3.