Moving to another PC - registration key question

[Leclair]

Hello am using Avast Pro 4.8 , but unfortunately i need to move to another computer , and as far as I know I can't use 1 reg. key on 2 different computers.
I 'd like to ask what steps should i follow to not my reg code to be marked as illegal one, because I am afraid of that , if i will install avast pro on new PC, the code will not work anymore..

So ,should i first remove avast application on first PC, and then install on new one, and paste reg.key from my mail? Will it work? Or exactly , what steps in general should i follow to make "secure" transfer? ;P

Thanks very much in advance.

[Lisandro]

Copy the license key (or save the email you've received it).
Just uninstall if from the old computer.
Install in the new one and use the same registry key.

There isn't a reg.key file.