Well, if you are using Windows XP Home Edition, IIS will not be installed on it, and what's more Microsoft have designed the operating system in an attempt to prevent
you installing it. This is not to say it can't be done (see here for instructions from one hardy user who beat their system into submission and got IIS running on XP Home Edition http://groups.google.com/groups?selm...8663173%40news
That said, this is probably a lot of fuss to go to, simply in order to run a crap web server on an operating system the manufacturers have made every effort to make incompatible with it.
So your best bet is to download and run the Apache installer from Apache.org (http://apache.mirrors.rossfell.co.uk...x86-no_src.exe
). The PHP self-ectractor should then be downloaded and installed from PHP.net (http://uk.php.net/get/php-4.3.8-inst.../from/a/mirror