Hi Anusha,
What you are unable to understand, if it is how to use CL_GUI_HTML_VIEWER then please check these links -
http://wiki.sdn.sap.com/wiki/display/profile/2007/08/30/About+CL_GUI_HTML_VIEWER
http://wiki.sdn.sap.com/wiki/display/Snippets/DISPLAYING+CUSTOM+HTML+IN+CL_GUI_HTML_VIEWER
But, if you are unable to disable Vertical Scroll Bar as the original thread then, you need to modify HTML page
For modifying HTML, add the value ";overflow:hidden" in parameter "style" of tag in your HTML page.
For Ex :-
<body style="font-family:arial;font-size:90%;overflow:hidden">
This way you won´t see the scrollbars.
Hope this would be helpful.
Thanks.
Kumar Saurav.