If you have a server license and want to use one instance of OrderPipeline to work against muliple sites. Here is how you configure it.
Find DotShoppingCart.Commercial.OrderPipelineService.exe.config in Install\OrderPipeline folder
1) Remove connectionString section
<connectionStrings>
<add name="dsc" connectionString="Data Source=localhost;Initial Catalog=dotshoppingcart.public;Integrated Security=SSPI;" providerName="System.Data.SqlClient" />
</connectionStrings>
2) Update DSC section
change
<dscConfiguration>
<DSC>
<add name="SiteConfigurationController" value="DotShoppingCart.Commercial.Base.
DSCSiteConfigurationController"/>
to
<dscConfiguration>
<DSC>
<add name="SiteConfigurationController" value="DotShoppingCart.Commercial.Base.
DSCMultiSiteConfigurationController"/>
3) Update enterpriseLibrary.ConfigurationSource section
change
<enterpriseLibrary.ConfigurationSource selectedSource="System Configuration Source">
<sources>
<add name="SiteConfigurationSource" type="Microsoft.Practices.EnterpriseLibrary.Common.Configuration.FileConfigurationSource, Microsoft.Practices.EnterpriseLibrary.Common, Version=2.0.0.0, Culture=neutral, PublicKeyToken=null" filePath="..\..\Web\DSC.config" />
to
<enterpriseLibrary.ConfigurationSource selectedSource="System Configuration Source">
<sources>
<add name="site1" type="Microsoft.Practices.EnterpriseLibrary.Common.Configuration.FileConfigurationSource, Microsoft.Practices.EnterpriseLibrary.Common, Version=2.0.0.0, Culture=neutral, PublicKeyToken=null" filePath="C:\DSCSuite\Web\web.config" />
<add name="site2" type="Microsoft.Practices.EnterpriseLibrary.Common.Configuration.FileConfigurationSource, Microsoft.Practices.EnterpriseLibrary.Common, Version=2.0.0.0, Culture=neutral, PublicKeyToken=null" filePath="C:\DSCSuite2\Web\web.config" />
C:\DSCSuite\Web\web.config and C:\DSCSuite2\Web\web.config are the web.config file locations of your sites.