just put the 2 files into your website folder
go to change.php and thats it (basic explanation)
lets do it a bit better now
first put both files into your www folder
open change.php
and edit to fit your database detais
edit the recapcha serial (

) to get a serial
and place the 2 codes you get in there (public and private)
then it is ready to go
then just go to

and it will works
be sure to have the recapchalib.php into the same place , els recapcha will not works
Greets From The Crasher