I backup to an external drive using USB.
I have no Vista CD.
HP provides a method to restore the system to its original delivered state.
I am not able to install the Windows AIK on my 64 bit system.
I can not write an AISBackup Restore CD.
After reading the recovery stuff in the manual and going through all I can find in the forums, I am still confused

I assume I would:
Restore my system to its original state.
Install AISBackup
Run a restore using my latest backup on the USB drive.
How do I proceed from there?