Put ClockWorkMod recovery on use the idiots guide in the Optimus Q section.
Next make a backup using clockworkmod (its straight forward once you reboot recovery in the installation steps).
Now put the flashable .zip on... reboot recovery again. And flash AreaRomQ v1.5 (or wait a few days and flash 2.0 on when I release it). Then before you reboot the phone go to mounts and storage and format the boot.img. Then go to Advanced Restore and restore the boot.img from your back up. Now reboot the phone.. you're done.