web set up deployment problem

Hi all,

Here i created websetup successfully for my website and installed in my local system. I set my default page as my homepage.aspx.

when i open in IE with http://localhost/powerhouse/homepage.aspx its opening fine..

But when i open other pages by clicking links from my home page its showing below error

Login failed for user 'USER2\ASPNET'.

please tell me where i need to configure to connect sql server. I wrote connection strings in web.config file.

please give me some suggestions to set up the project like iis applcation settings

thank you....