Server Error In '/' Application

I have just upload my site to a which is going to be host the site, the thing is the site runs great on my PC. But when i login or do a search i get an error  "
Server Error in '/' Application" i know its something to do with the Web config as i read something on here about it but i cant find that post now.


Site URl http://www.team-nat.co.uk


Try the login or click on the stolen marker link and you will see the error im getting.


This is my web config. <configuration xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0">
<appSettings/>
<connectionStrings>
<add name="DatabaseConnectionString" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename="C:Documents and Settings
ickMy DocumentsVisual Studio 2005marker-regApp_DataDatabase.mdf";Integrated Security=True;Connect Timeout=30;User Instance=True"
providerName="System.Data.SqlClient" />
<add name="DatabaseConnectionString1" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|Database.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
providerName="System.Data.SqlClient" />
<add name="ConnectionString" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|ASPNETDB.MDF;Integrated Security=True;User Instance=True"
providerName="System.Data.SqlClient" />
<add name="ConnectionString2" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|markers.mdf;Integrated Security=True;User Instance=True"
providerName="System.Data.SqlClient" />
<add name="ConnectionString3" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|
ews.mdf;Integrated Security=True;User Instance=True"
providerName="System.Data.SqlClient" />
<add name="ConnectionString4" connectionString="Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|messages.mdf;Integrated Security=True;User Instance=True"
providerName="System.Data.SqlClient" />
</connectionStrings>
<system.web>

 I know its something to do with the connectionStrings as its pointing to my PC and not at where it should be at the server its running on but i have spent the last 3 hours editing the web config but it does not matter what i do i cant get it to work.

What am i missing here?

Ps Im new to ASP.

Thanks