can't find the "register" key

hi,
i have the hebrew version of avast i downloaded today (free). i want to register but can’t find the “register” key in the window in which i write my details. what can i do?

if you use the online reg, there is no key…only your name and a valid Email address

The following instructions for registering and inserting your license key assume that you already have avast! Free Antivirus 5.x installed on your computer. There are two methods of registering for, and inserting, the avast! Free Antivirus 5.x license key:

On-line registration

Off-line registration

On-line registration is very simple and it's the preferred method for all users of avast Free Antivirus 5.x installed on a computer with standard Internet connectivity. To perform on-line registration follow these steps:
http://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=459