subscription owner change

In SQL server reporting manager we created some subscriptions for some reports.The user who created the subscription - the owner is gone.So now we have some subscriptions failed.I searched on line there is a script that you can change the ownership from the old user to new user. Or you can delete the old subscriptions, and recreate them.http://blogs.msdn.com/b/miah/archive/2008/07/10/tip-change-the-owner-of-report-server-subscription.aspxBut this sounds still not a very good solution , for the new user may be gone someday too, and we will have to do the same process. Manual creating those will be a lot of work too.Is there a way that I can use SQL service account of this reporting server to be the owner of subscription?Will replace the user with the service account in the script I mentioned above work?Thanks