> I have registered month ago..., but I have not got an answer yet.
We don't send answers.
> Today I have suggested the above mentioned webpage again.
Why? You were asked to suggest a site only ONCE
> Why is there no feedback (email) that someone has received the registration?
You have received feedback. At the moment you suggest a site a screen is shown to you which tells you that the suggestions is received.
> The registration at DMOZ is important for me,
> because I'm a new small company which was founded in 2007!
I am afraid you will be very disappointed to hear that DMOZ will not have any magical effect on your website. The succes of your website depends purely on you and your activities. Not on something a volunteer may do somewhere in the future.
I advise you to read our FAQ (link at the top of this page) for more information about DMOZ.