First DNN Setting in Web.config.

<system.webServer>
<security>
<requestFiltering>
<requestLimits maxAllowedContentLength="100000000" />
</requestFiltering>
</security>
</system.webServer>


Change connection string:

<add name="SiteSqlServer" connectionString="Data Source= Abhishek-pc\sql2008;Initial Catalog=dnnT; uid=sa; password=2008;" providerName="System.Data.SqlClient" />


and also  if u don't want to by wizard then set to false

<add key="UseInstallWizard" value="false" />

First set the all permission on project folder and deploy In IIS