I've just bought a HP laptop with Windows Vista Premium.
After I downloaded the zip-file for Xampp and installed it, I couldn't get Apache to start because it was set to "busy". I tested starting Apache from the control panel and from the apache-folder, but it didn't work.
Notable: MySQL is working real great and I've disabled the "user access control"-crap
I didn't set mysql/apache/mozilla as service when installing xampp.