windows 7 system image question

I have a qestion.
Is avast last version compatible with windows 7 system image?
Or i must make a system image before i install avast 7?

Windows 7 system image can be found in control panel in section backup and restore.
Anyone who has restore a system image with avast antivirus installed in the image?

It has always worked perfectly for me. You could always save an image before installing avast then rename it WindowsImageBackupOriginal.
Then install avast and create another image which will automatically be named WindowsImageBackup. I usually have 2 available just in case one fails. I have never needed to use the original one though.

In addition to the system image, I run a daily file backup because the image will not contain any newly created files.

Thnx for ur answer