Revise Old Flash 5 SWT Template

We are using an old Macromedia product called Macromedia Generator2 to build a batch of photo slideshows in Flash (the output is an SWF file). Generator runs as a command line application, reads a text file and reads mp3 files and jpegs to create a SWF movie with an audio background. An earlier version of Flash (Flash 5) had the ability to export an SWT file which was used as a template by Generator to control the size, format and duration of the resulting SWF. We need to revise the SWT file to output a larger image size than before (416 x 312), but the Flash developer who built this several years ago no longer works here. We are looking for a Flash developer who knows what an SWT file is and can build one either based on our current SWT which we can send you or by specification. My impression is that this could be done without much trouble if the developer knows Flash 5 well. We have the Generator User Guide, which explains the purpose of the SWT file, but not how you build it. I expect that would be found in the Flash 5 documentation.