Cross domain database mirror/synchronization

I work in an environment where we have multiple disconnected networks (i.e. public network and a private (disconnected) network) which are not connected in anyway.  I need to "mirror" a database instance on one network to the other network (one way only).  I was hoping there would be a solution which would allow me to "ship" the transaction logs via "sneaker net" to the other network database which would pick them up and process them. SQL Server seems to allow this option with "log shipping".  I only need the data on the target server to be read only.  I have