Great news.
For some reason if you need to install a Publishing Site, developed in a SharePoint 2007 with infrastructure update, in a SharePoint 2007 with only SP1 o you can :).
You just need to use stsadm -backup and stsadm -restore to do the job.
Sorry, but can't be done, i was wrong, i used two SharePoint 2007 Server VM but both where with Infrastructure Update 🙁 my bad.
Backup a Site Collection
1.Open a console windows
2.In the cmd window navigate to the “C:\Program files\common files\microsoft shared\web server extensions\12\bin” directory.
3.Type stsadm -o backup -url “http://YOURSITE” -filename “C:\BACKUP.bak” -overwrite
4.Press Enter
At this point you can copy the file to the other server, or just perform the restore on the same server by following the steps below.
Note before restoring ensure that the target site collection you are restoring onto is a BLANK site. This will allow you to avoid some potential issues with duplicate names and ID’s.
To Restore a Site Collection
1.Open a console windows
2.In the cmd window navigate to the “C:\Program files\common files\microsoft shared\web server extensions\12\bin” directory.
3.Type stsadm -o restore -url “http://YOURSITE” -filename “C:\BACKUP.bak” -overwrite
4.Press Enter