To register ByHeart please visit

https://www.regnow.com/softsell/nph-softsell.cgi?item=1958-1

or

https://www.v-share.com/order.asp?username=v_byheart&product=BH

or

http://www.orc.ru/~stasson/bhhomee.html

You can also contact the author via e-mail: stasson@orc.ru