yes i am able to access. Following is the complete error i got. I think the dtsx file is accessible now.

Microsoft (R) SQL Server Execute Package Utility

Version 9.00.1399.06 for 32-bit

Copyright...

Now i am getting error like "D:\QA\Packages_27April\Deployment_Folder\CopyParameters\CopyPackage_Config.dtsConfig" is not valid. Check the configuration file name.

where i gave the parameter for config file as

/CONFIGFILE "\\10.207.112.70\d$\QA\Packages_27April\Deployment_Folder\CopyParameters\CopyPackage_Config.dtsConfig"