The first pair of plans involves a microcontroler, err, programmable chip, and good luck actually downloading the code into that, i dont think he tells you how. hes german so the parts may be anywhere, good luck finding them, if you can find them and got them all ordered and such, it wouldnt take much skill, the more you have, however the better it will look.
the second pair is just like the ones i built at www.geocities.com/outcast20087923/goggles.html (direct link, not accessable from main page, be sure to check out the main page however) that method is unrelyable, as you spend so little time (or none at all) in REM

aaannnddd the and operation that needs to fit in around the two leds, also need to fit in the LEDs

www.geocities.com/oucast20087923/andopperation.bmp

the one I propose to use is the one using the optical mouse, they are easy enough to find you know, you only need one.
any ideas on making the and circut obsolete?, maby a special LED that I dont know about for some reason?[/url]