this page is a list of sensors and where you can buy them. Sometimes it's easy to find a chip made by a certain manufacturer but then hard to find a distributor. This page takes all the leg work out of it.
myHTPC is a highly customizable,menu driven front end that allows you, among other things, to launch external programs, browse pictures and large collections of almost any type of media stored on your computer.
contains links related to development with the PIC family of microcontrollers made by Microchip
I wish i had found this site before i wrote code to get data from a GPS receiver for a WinCE device. It explains every facet of the Windows File interface as it's applicable to RS232 reading/writing. Also, a great hardware ref. See links on left.