u haven't created the ASPNET user for ur sql server database try this:
1. Click on "New Login" button on toolbar in Sql Server enterprise manger
2. on the right side of Name textbox there is a button like [...] click it and select ASPNET (....) and click ok and create ASPNET user for ur db
then try to run ur application hope that wud work
u need to configure ur sql server for asp.net to access sql server db
Regards,
Rashida Jabeen
http://www.akaas.net