Script to transfer files

So I did search and only found very old forum posts so I'm hoping there is something new on this.  I support a software package and we've got it deployed on close to 1000 PCs in the field.  When we connect to a field PC, its usually to reinstall the software.  Because the package is made up of 4 seperate applications, there are a number of folders to copy and it can take a good bit of time.  I was wondering if its possible to script copying files from the host machine to the remote machine or is this still something that can't really be done?  

I do see that you can add a resource file for an embedded script, but I don't want this to run automatically...this is more an as needed kind of thing.

Thanks