i use one of this do it yourself web development package and now i'm stuck with creating drop down menus please help me out or you can give me scripts to insert in my site to do that for me

Which WYSIWYG are u using, If u are using Dreamweaver CS series,

CLick on insert and use the spry menu bar features,
it has drop down menu,

In the time it takes you to figure out via WYSIWYG, you could have done it from scratch, by hand.

1) Your main nav will consist of UL and LI, with the LI floated left.
2) Your dropdown will consist of regular UL and LI (not floated).
3) You then hide the dropdown, via css (display none)
4) Via javascript, when you hover over an LI from #1 above, you change display from #3 above from "none" to "block".
5) Consequently, when you mouse out, you do the vice versa of #4 above

Sure, you can go ahead and use your WYSIWYG, it's your call. In the long run though, it is imperative you know how to do stuff by hand, as "difficult" as it might be, for your own code and marketability in the market.

good luck!