I *think* that the only problem is the dependecy in libgnome* stuff,
but I also *think* that some parts of this libs are ported.
There is Evolution for windows :
http://shellter.sourceforge.net/evolution/
http://evolution-win32.sourceforge.net/oldindex.php
Based on that, it should be possible to port or compile Epiphany on Windows XP.
Thanks for using Epiphany! (and GNOME of course)
PD: If anyone has any good tip for doing this I would be glad to hear
it, a friend of mine wants to do it this southern summer (jan-mar).