Open StartUp page based on LoggedIn user in ASP.Net

hello,

i have followings pages in my project

Default.aspx

Default2.aspx

Default3.aspx

i want user can store the page name in sql table and when application start it checks the name of page and show the that page start currently website be default start default.aspx

so for e.g if user has store default2.aspx as start page so website hsould check that start page name is default2.aspx and it should show that page instead of default.aspx please advice

can i set it global.asxp application_start tag or not