Drop Down Menu

> Other then using simple menu or nice menu, is there any other choice I can use?

I've not seen any. I'd be interested to hear about any other menu projects too.

> Does anyone can let me know how to edit in my template similiar like the below's website?

Your first step to success is to perhaps change that question to:
'how do I integrate suckerfish menus into my theme?'
And your second, optional, step is to post the new question in the themeing forum.

I did some quick searching and found lots of theme developers doing it, but no information on how.
I think the theme template only requires a small snippet of script to tap into drupal's primary/secondary
menu system, and of course there will be a shedload of css to add. I think you'd probably only need
rudimentary themeing and php skills to examine a theme which already has the suckerfish menus
integrated, and work out how it is done. Unfortunately, I don't think I have enough skill myself to do it!

Good luck. I'll be following this thread.