administrator with ownership trying to change permission Ultimate

[Guest eddie]

Vista Ulitimate.On installing a program I am confronted with a message."could

not open key Hkey_local_machine\software etc.. Verify that you have

sufficient access to that key.

I have waded through security for this software to change permission. I have

achieved changing ownership to administrator but have lost the thread at

changing permission for the object in this case the Program that gives me

suffiecient access to that Hkey. I imagine I should be able to gain full

control over security of this program to get rid of this message blocking my

installation progress but I don't understand the final steps to gain full

control.