[plt-scheme] Web Server Templates - absolute paths?

Thanks Jay McCarthy and all who worked on the templating system for the PLT 
Web Server. I've started playing with it, and it seems very cool. I do have 
one question: From my experiments, it seems include-template requires a 
relative file path, and does not except an absolute path. For example, if I 
try:

(include-template "c:/path/template.html")

I see the following error:

include-at/relative-to/reader: bad relative pathname string in: 
"c:/path/template.html"

Is there any way to make this work with an absolute path?
Thanks.
-Eddie Sullivan