I found a nice design on this website:
http://www.picbasic.nl/ => Projecten => Digitale DCF77 klok
Circuit diagram DCF77 clock
I built the simple version (without sound) at the time and the clock is still working fine.
The clock uses a 16F628 PIC and a DCF77-module.
I selected a nice blue display to present the time.
DCF77 receive module
Clock in operation
All about the 77.5 KHz DCF77 transmitter in Mainflingen: