5
Unfortunately the XAMPP developers seem determined to get you to install the very latest PHP and MySQL versions. You can actually switch between PHP 4 and 5 (they're both included in the XAMPP package) but it's a chore. It would be far better to have the choice of versions at the installation stage IMHO.
I believe you can still get XAMPP packages that install PHP 4 and MySQL 4, but there are no links to these from their website. Someone did post a link here once, but I lost it.
If you do re-configure, don't forget to mirror your server's 'register_globals' and 'safe_mode' settings too. Quite a few older XOOPS modules will simply not work with 'globals' off.
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