Add grunge effect to text using CSS

Or add any background texture to text
http://www.jankoatwarpspeed.com/post/2008/08/09/Add-grunge-effect-to-text-using-simple-CSS.aspx

Iconise text links with CSS

http://pooliestudios.com/projects/iconize/

Default Image (in case of problems)

http://www.jason-palmer.com/2008/06/img-default-image/

Google unix-like Shell

If you're into command-line stuff and or scripting , give this a look:
http://www.goosh.org/

more on URL rewriting

http://www.addedbytes.com/apache/url-rewriting-for-beginners/

Object-Oriented programming in PHP for beginners

http://www.killerphp.com/tutorials/object-oriented-php/php-objects-page-1.php

Tips for booting from USB flash drive

The first tutorial seems a bit more readable. There's info on making a USB flash drive bootable from a CD/DVD image and also from a floppy image!

http://www.raymond.cc/blog/archives/2007/10/16/how-to-make-a-usb-flash-drive-bootable/

http://www.weethet.nl/english/hardware_bootfromusbstick.php

Happy Dos-ing

p.s. - this is also handy:
http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=US&swItem=MTX-UNITY-I23839

Good Video tutorial on sysprep

Sysprep can be used to prepare an image of a windows drive before you image it so that it will work on any windows machine (in theory) - I'm pretty sure it just removes all the hardware drivers you install and leaves the generic windows drivers only on the image so that it should work on any machine. There's a very good tutorial here:
http://www.vernalex.com/guides/sysprep/video.shtml

Pretty Checkboxes for your website

http://www.no-margin-for-errors.com/projects/prettyCheckboxes/

Apple style accordion menu for your website

http://www.kriesi.at/archives/apple-menu-improved-with-jquery

Ical Events - convert Google Calendar and other ICS feeds into PHP arrays

http://www.xvx.ca/icalevents/

Preventing Spam in Form Submissions without Using a CAPTCHA

http://www.landauer.at/preventing-spam-in-form-submissions-without-using-a-captcha.php

Horizontal JavaScript Accordion 1kb

http://www.leigeber.com/2008/05/horizontal-javascript-accordion-menu/