In your DW page, the extension may have done two things. If in ASP, it may have put <!--#include file="google_javascript/wagmp_map_1.asp" --> You may need to change "file" to "virtual" Also, for me document relative links did not work, I need to change it to <!--#include virtual="/InsertYourFolderNameHere/google_javascript/wagmp_map_1.asp" -->
You need to do the same thing for the .js file
<script type="text/javascript" src="/InsertYourFolderNameHere/google_javascript/wagmp_maps.js">/*wagmp*/</script>
I'm still having other hiccups, but at least the markers are displaying now.