How to add the network admin user, as a user, to all network sites

Hello,

Is there a way to add the network admin as a user to all network sites AFTER the network sites have been created?

I think to to do this before hand, the new Blogs template plugin would work, I’m specially asking about adding the network admin existing blogs.

Any help would be much appreciated.

If this requires a script to run on the database, I could get the sorted if you tell me what it needs to do,

many thanks

Ralf