In short, set the subscription using SSMS.
Upload the package to your SQL Integration Server, then use SSMS to create a job under the SQL Server Agent. On the job itself, create the step to fire the SSIS package that you uploaded, and set the frequency to quarterly.
You will need to ensure that the credentials you select have access to all the paths referenced in your SSIS package.
For more information, see:
http://technet.microsoft.com/en-us/library/dd440761(v=sql.100).aspx