|There's more than one way to do things|
Modifying %ENV only affects the current process and any child processes it happens to start.
It does not affect its parent; nor other non-child processes started afterwards.
And it definitely does not change the registry.
If you want to change the registry; use a module designed to do that. (Hint: search CPAN for the word "registry")
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.