It actually wound up looking a little different than that (trial and error, you know):

*Popup "file manager" "$FileManager$" /n,::{20D04FE0-3AEA-1069-A2D8-08002B30309D}"
*Popup "explorer" "$FileManager$" /n,C:\Documents and Settings\XXXXXXXXX\My Documents"


I'm guessing that it's the /n that does it... but what was the /e supposed to do?

Thanks again! You put me on the right track!