Now i got the solution for this

hi all

if you want add your site in your window start menu, window startup, favourite etc follow the following procedure

step 1 - get the systemusername.

step 2 - crate shortcut file extension .url.

step 3 - assign url = your site url in the shortcut file content
example
--------
//-------------- copy and paste the below two lines --------------------
[InternetShortcut];
URL="discussweb.com"
----------------------------------//
step 4 - get the values windowstartmenu,windowstartup,favourite through checkbox.

step 5 - write the url file corresponding to step4
example
--------
1. C:\Documents and Settings\systemusername\Start Menu\Programs\Startup\shortcut file
for windowstartup
C:\Documents and Settings\systemusername\Favorites\shortcut file
for favorite or bookmark

step 6 - The above steps are created in vb or other application language and make as exe and stored in server.

step7 - give the exe download option through php or serverside language.

step8 - now the user download the exe from server to client machine and install the exe. then reflect in window startmenu, window startup and favourite.

Note : we have to create seperate exe for firefox because favourit and bookmark are seperate location. check the browser and give the download option for the corresponding exe.

Thanks
T.Varghese