Wiring for a clock signal

[mvs_sarma]

A project I have taken on involves wiring a clock signal into a quadrature decoder that I am using with a digital encoder. I basically need a square sine wave input to the decoder. I have an extra two lead crystal clock that I use with PICs, I wanna see if I can use this. Does anyone have experience with this? Do I just need one lead from the crystal at Vcc or what? Thanks for your input!!!

Hi,
square sinewave input?
please see the url below

www.national.com/nationaledge/jun04/article.html