This sounds like what I've been looking for. I take it that XAMP is not not the same as programs such as MarsEdit and Blogo--which enable working on a site "off-line", but not really being able to view the site ahead of time.
(Sorry, I'm not too good at using, or understanding, the correct terminology for all this.)
I presently have a site which I can view, using Safari, before I've actually uploaded the content to the actual web site. This is what I'd like to do with my WordPress attachment to the site. The hosting company I use has already installed Wordpress for me, and it is attached to my site with an "/blog" addition to my site's domain name. At present, however, I can only view the Wordpress content that I've actually synced from the site to my computer, and then only when I have an internet connection. This does not help me make timely corrections.
Will an XAMP installation allow me to view my last Wordpress revisions before I've actually transmitted them to my site?