I won't recommend you to do it when you are not very sure what you are doing.
Ok, you should have a 'ROM' folder under your aWizard folder. (e.g. c:\aWizard\ROM)
create a folder under this 'ROM' folder named `mda_compact2` (exactly)
extract everything into this new folder, so, among other files, you have
and a folder
where you have bunch of CAB files there.
go to command line, start aWizard.bat
(1) first, do a unlock CID (option u)
(2) then Enable RAPI (option e)
(3) then use the (w) to write the OS ROM into your device
after step (3), you should have a choice to select the ROM that you already put into. Follow the screen instructions from here.
NOTE: If you can't see any choices after step (3). Quit and check your folders again.
This is an early version of aWizard I'm refering to. Refer to the thread for any updates. Better read through the thread before doing so (yes, it is a long read, better a long read and a long wait if you kill your phone)