Yeah, i'd change the header. Also, add some more links at the top to things like article pages, sales pages, etc. Articles would help bring in some traffic, once indexed, especially if you can write a load of them yourself. Perhaps adding a forum or other forms of community interaction would be a good way to attract and keep people coming back.
Thank'you all. Have done some fix'es these days.. Just one more question: Do you think it is to Hazardous move from 960px wide to 1200px(or similar) ?? kaos!