Can't register to Avast

Hi,
I have downloaded Avast free Antivirus 2 weeks ago, now, I need to register in order to keep it valid and free.
In the registration window, I type my details bot there is no ‘submit’ button, and I can’t complete the registration (see attached ling with the image)
How should I do it though?
Thanks

http://img268.imageshack.us/img268/9711/aaaawd.png

Do you know why the image shows mixed English and Hebrew along with Hebrew formatting of right to left?

I would think that a Hebrew version would be entirely in Hebrew and so on for the English language version.

There could be a screen formatting problem.