Is there an option to create a bootable rescue CD/USB?
You can create a bootable CD/USB using the ISO and the ZIP archive. You will have to download them from the following link: http://www.avg.com/us-en/download.prd-arl
To create a CD: download the ISO version and burn it with your favorite disc burner (eg. IMGBurn)
To create a USB: download the ZIP archive, extract it to USB and then rub makeboot.bat. Choose the drive letter of USB and proceed.