David, download the program Araneae
(http://www.ornj.net/araneae/)
and then the first time you want to use Frontpage to open an .asp file right-click the file and in the options choose 'Open With' > 'Choose Program' , look for Araneae in the program list, and select the tickbox to set it as default, (leave the 'association' tickbox ticked)
This will then open up any .asp files in Araneae whilst using Frontpage and you'll find it works a lot smoother coding only as you want it
When you make any changes to a file, click to save it and then go back to the Frontpage window. You'll notice the header grey'ing out for a moment as FP overwrites the file with your changes
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