Dear sirs
My Avast! cannot run… What am I going to do???
Please, Help me…
By the way, I received my registration code to use it…
Regards
amadasp2003
ama,
What do you mean Avast will not run?
Have you attempted to install it?
Do the Avast icons (A and I) appear in the system tray?
If so, right click on the A ball in the tray and try to load the User Interface (Start Avast! Antivirus).
Please try to provide more detail so I can help you.
Techie
Besides what techie said, which is correct, why don´t you give us some information about your OS and firewall 
You will use your registration code when avast! run the first scan