how to connect data base in sql

Hi
I have a problem with my data base.
when i run my project (ASP.NET) in Vs 2005 my data base work.
but i run in localhost isn′t work.
my data base as a .mdf(sql server)
Can help-me ?
Are you getting an error or isnt simply not working? Do you meanwhen you run it under IIS [as oppose to the development server] itdoesnt work?
|||yes it is an error message and it happens when i'm runing the IIS
The Link of my server is http://ocodigo.no-ip.info
Open a "Registar" option, you full fill then spaces and press "Registar" Botton, and next you will see the error.
|||Hello WATT
I couldn't see the error message. I think u have to change something inthe "web.config" file, so we could see the error message.
Because i got this message:

Server Error in '/' Application.

---

Runtime Error

Description:Anapplication error occurred on the server. The current custom errorsettings for this application prevent the details of the applicationerror from being viewed remotely (for security reasons). It could,however, be viewed by browsers running on the local server machine.
Details: To enable thedetails of this specific error message to be viewable on remotemachines, please create a <customErrors> tag within a"web.config" configuration file located in the root directory of thecurrent web application. This <customErrors> tag should then haveits "mode" attribute set to "Off".

<!-- Web.Config Configuration File -->
<configuration>
 <system.web>
 <customErrors mode="Off"/>
 </system.web>
</configuration>

Notes:The current error page you are seeing can be replaced by a custom errorpage by modifying the "defaultRedirect" attribute of the application's<customErrors> configuration tag to point to a custom error pageURL.

<!-- Web.Config Configuration File -->
<configuration>
 <system.web>
 <customErrors mode="RemoteOnly" defaultRedirect="mycustompage.htm"/>
 </system.web>
</configuration>

Mow