FRS between SBS03 Domains

Is it possible to setup the file replication service to replicate a drive between other "connected" SBS03 domains

I have 4 diffrent domains all running Small business server 2003, Head office, branch, branch, branch. We have data on the headquaters server that we want all the other domain's to be able to access (up to date data) so if a change is made it needs to be replicated to the otehr domains....the problem is they are running SBS03 standard edition..

is there a way of doing this

thanks