Hi Erin,
If you are using Flash Actionscript, chances are you will want to set up your actionscipt to "read" data as XML. That's where I would start if I was you: updating your flash maps to import informatin from an XML file. And you can write XML in any text editor, like notepad. For example, from:
http://foo/map-data.xml Later, you can setup data in MySQL and write PHP scripts to automatically generate the XML in real time. This takes a lot of investment in setup time (install MySQL, install PHP, maybe also install Apache). But if you make it through all that, you can write PHP to have the XML write iteself:
http://foo/map-data.xml.phpFinally, you can play with your PHP code to get fancy and pass parameters to slice and dice the XML file you are requesting from flash, like this:
http://foo/map-data.xml.php?state=coHopefully that's a logical progression.