This program turns your computer into a server.... xD
Info:
Many people know from their own experience that it's not easy to install an Apache web server and it gets harder if you want to add MySQL, PHP and Perl.

XAMPP is an easy to install Apache distribution containing MySQL, PHP and Perl. XAMPP is really very easy to install and to use - just download, extract and start.

XAMPP for Solaris :

The distribution for Solaris (developed and tested with Solaris 8, tested with Solaris 9) contains: Apache, MySQL, PHP & PEAR, Perl, ProFTPD, phpMyAdmin, OpenSSL, Freetype2, libjpeg, libpng, zlib, expat, Ming, Webalizer, pdf class.
WARNING: This version of XAMPP is still in the first steps of development. Use at you own risk!
Code:
http://www.apachefriends.org/en/xampp-solaris.html


XAMPP for Mac OS X:

The distribution for Mac OS X contains: Apache, MySQL, PHP & PEAR, SQLite, Perl, ProFTPD, phpMyAdmin, OpenSSL, GD, Freetype2, libjpeg, libpng, zlib, Ming, Webalizer, mod_perl, eAccelerator, phpSQLiteAdmin.
WARNING: This version of XAMPP is still in the first steps of development. Use at you own risk
Code:
http://www.apachefriends.org/en/xampp-macosx.html


XAMPP for Windows:

The distribution for Windows 98, NT, 2000 and XP. This version contains: Apache, MySQL, PHP + PEAR, Perl, mod_php, mod_perl, mod_ssl, OpenSSL, phpMyAdmin, Webalizer, Mercury Mail Transport System for Win32 and NetWare Systems v3.32, JpGraph, FileZilla FTP Server, mcrypt, eAccelerator, SQLite, and WEB-DAV + mod_auth_mysql.
Code:
http://www.apachefriends.org/en/xampp-windows.html


XAMPP for Linux:

The distribution for Linux systems (tested for SuSE, RedHat, Mandrake and Debian) contains: Apache, MySQL, PHP & PEAR, Perl, ProFTPD, phpMyAdmin, OpenSSL, GD, Freetype2, libjpeg, libpng, gdbm, zlib, expat, Sablotron, libxml, Ming, Webalizer, pdf class, ncurses, mod_perl, FreeTDS, gettext, mcrypt, mhash, eAccelerator, SQLite and IMAP C-Client.
Code:
http://www.apachefriends.org/en/xampp-linux.html



THese things can make your comp into a server but u can still use ur comp as a comp lol xD hope this helps u guys. u guys mite already no about this but i thot it would be helpful for others..