Turn your PPC into an iPod

[hemdosh]

HELP HELP. SOMEBODY PLEASE TELL ME WHAT I AM DOING WRONG!!

As per the instructions, I successfully downloaded the ppod file on my ppc. Then without opening, as per instructions I transferred the key4pBop.exe file on the ppc. Now when I try to open the key4pbop file on the ppc, I get an error message "file cannot be opened.Either it is not signed with a trusted certificate, or one of its componenets cannot be found. Try installing or restoring the file" I tried this a number of times but with same result. I know I am doing something stupid and there is a simple answer to this, please help me out here. Thanks in advance.