SSIS configuration

Dear all,

I am a newbie to SSIS/.net World. I am supporting a project which is implemented in SSIS and .net technologies.

I have SQL Server 2008 and Visual Studio 2008.

The code is written in SQL Server Integration services and has executable files with .dtsx extension.

I have this master package "DadsMFPMaster.dtsx" runs it reads a configuration file DadsMFPEtl.dtsConfig

I can read this file in xml and It has configuration in it.

<?xml version="1.0"?>
<DTSConfiguration>
 <DTSConfigurationHeading>
  <DTSConfigurationFileInfo GeneratedBy="MJohnVS2005\Mike" GeneratedFromPackageName="DadsMFPMaster" GeneratedFromPackageID="{AE3D31AC-ECD5-4162-9F33-E236E3235E76}" GeneratedDate="8/22/2010 7:18:20 AM"/>
 </DTSConfigurationHeading>
 <Configuration ConfiguredType="Property" Path="\Package.Variables[MasterPkg::EMailConnectionString].Properties[Value]" ValueType="String">
  <ConfiguredValue>SmtpServer=smtp.dhs.state.tx.us;UseWindowsAuthentication=True;EnableSsl=False;</ConfiguredValue>
 </Configuration>
 <Configuration ConfiguredType="Property" Path="\Package.Variables[MasterPkg::EMailReciepent].Properties[Value]" ValueType="String">
  <ConfiguredValue>email@state.tx.us</ConfiguredValue>
 </Configuration>
 <Configuration ConfiguredType="Property" Path="\Package.Variables[MasterPkg::EMailSender].Properties[Value]" ValueType="String">
  <ConfiguredValue>email@state.tx.us</ConfiguredValue>
 </Configuration>
 <Configuration ConfiguredType="Property" Path="\Package.Variables[MasterPkg::HCATSOleDbConnectionString].Properties[Value]" ValueType="String">
  <ConfiguredValue>Data Source=HCATS;User ID=user_id;Provider=OraOLEDB.Oracle.1;Password=$Pwd22Temp;</ConfiguredValue>
 </Configuration>
 <Configuration ConfiguredType="Property" Path="\Package.Variables[MasterPkg::LogXmlLocation].Properties[Value]" ValueType="String">
  <ConfiguredValue>E:\DADSMFPProcessingTemp\LogFiles</ConfiguredValue>
 </Configuration>
 <Configuration ConfiguredType="Property" Path="\Package.Variables[MasterPkg::QAIOleDbConnectionString].Properties[Value]" ValueType="String">
  <ConfiguredValue>Data Source=QAI;User ID=CATTS_DEV;Provider=OraOLEDB.Oracle.1;Password=CATTS_DEV;</ConfiguredValue>
 </Configuration>
 <Configuration ConfiguredType="Property" Path="\Package.Variables[MasterPkg::RunTimeEnvironment].Properties[Value]" ValueType="String">
  <ConfiguredValue>Production</ConfiguredValue>
 </Configuration>
 <Configuration ConfiguredType="Property" Path="\Package.Variables[MasterPkg::SpreadSheetTempProcessingDir].Properties[Value]" ValueType="String">
  <ConfiguredValue>E:\DADSMFPProcessingTemp\</ConfiguredValue>
 </Configuration>
 <Configuration ConfiguredType="Property" Path="\Package.Variables[MasterPkg::SsisChildPackageDir].Properties[Value]" ValueType="String">
  <ConfiguredValue>E:\DADSMFPProcessingTemp\SSISPkgs\</ConfiguredValue>
 </Configuration>
 <Configuration ConfiguredType="Property" Path="\Package.Variables[MasterPkg::TriggerTestSwitch].Properties[Value]" ValueType="Int32">
  <ConfiguredValue>0</ConfiguredValue>
 </Configuration>
</DTSConfiguration> Question: Data source = HCATS has recently moved physically so it has a new host name and new database user_id/passwd. Can I update DadsMFPEtl.dtsConfig and set new host name for Data Source = HCATS and database user id/pwd. Please advise. Any help is highly appreciated. Best regards JP