How to execute an SSIS package on a click of a button in Share Point 2010

I have a task to create a button on a Share Point 2010 Page and when the user clicks on the button, an SSIS package should be executed loading data in a SQL Server database tables. I have created a custom web part to place the button and the code to call and execute the SSIS package and all the error messages is written to the Event Log. I have deployed the Custom Web part to the Share Point 2010 site successfully. When I click on the button which executes the SSIS Package, I get the following error messages on the Event Viewer and the package does not get called.

Error could not load assembly 'Microsoft.SqlServer.DTSRuntimeWrap' or one of its dependencies. File not found.

Would anyone know how to resolve this issue? Any help is appreciated.

Thanks,

PDevi