VirtualBox 3.1 significantly changed the way that harddisks, dvd/cd drives and floppies are mounted. The following steps are to install Windows XP as a guest on an Ubuntu 9.04 host with a IntelAhci SATA controller.
On Windows XP, to change the HTTPS secure port binding (e.g. to port 444 instead of 443), run the following adsutil script at the command prompt:
C:\Inetpub\AdminScripts>cscript adsutil.vbs set w3svc/1/securebindings ":444:"
Microsoft (R) Windows Script Host Version 5.7 Copyright (C) Microsoft Corporation. All rights reserved. securebindings : (LIST) ":444:"