Flash Menu / Html Frames

Hi
I am developing a web and for which I am using a frame [ content & banner ] from frontpage 2000.
> Flash menu page = “flashmenu.html” [shown on left pane of html frame]
HTML Page = “maincatg.html” [right side of html frame]
sub1 is bookmark & sub2 is bookmark on maincatg.html page.

> On left side of frame I have flash menu which has main & sub category for eg.
Main catg. 1 [ top level menu]
> Sub 1 [ bookmark item on right side of frame]
> Sub 2 [ bookmark item on right side of frame]
Main catg. 2 [ top level menu]
> Sub 3 [ bookmark item on right side of frame]
> Sub 4 [ bookmark item on right side of frame]
and so on.
> I have named left side pane as “left” , right side pane as “right” and top as “top”.

> Now, my problem is how can open “maincat1.html” page on right side of HTML frame and HOW CAN I MOVE TO A BOOKMARK ON THE SAME PAGE WHEN USER CLICKS ON “SUB1” FLASH BUTTON.

help me out please… Thanks in advance