Sorry to ask but I can not find the site:
There is a CD with Avast to repair infected disks?
Explain:
It could be a CD with Linux (or similar) and Avast program that put power machine allows you to clean the discs windows / Linux and then install Avast antivirus.
A utility for those who cleans hard for a living and while you assure more installations Avast and do a good professional.