problem with my web application

Unfortunately iam deploying to my web provider which only
allows me a
root folder for my domain i can create subdirectories but no
new
virtual directories heres my connection line in my
web.config i think
reason why it works local but not remote is because locally
my db
connection line directs to right place when deploying
shouldnt it
direct to the sql server provided by my web provider ?

<configuration
xmlns="http://schemas.microsoft.com/.NetConfiguration/v2.0
">
  <connectionStrings>
 <add name="ConnectionString"
connectionString="Data
Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|quiz.md
f;Integrated
Security=True;User Instance=True"
providerName="System.Data.SqlClient"/>
  </connectionStrings>
	<system.web>
    <customErrors mode="Off"/>
    <profile enabled="true">
      <properties>
        <add name="Theme" />
      </properties>
    </profile>
    <authentication mode="Forms"/>
    <compilation debug="true"/>    
  </system.web>
</configuration>

Unfortunately i let my provider check if the setting for my
webapplication is set to use .net 2.0 . Provider set 2.0
only is active
for my web application and now iam gettin this error

Server Application Unavailable
The web application you are attempting to access on this web
server is
currently unavailable. Please hit the "Refresh"
button in your web
browser to retry your request.

Administrator Note: An error message detailing the cause of
this
specific request failure can be found in the application
event log of
the web server. Please review this log entry to discover
what caused
this error to occur.

of course i cant axxess that event logi also corrected my
conection
string in web.cofig to /SQLSERVER instead /SQLEXPRESS