If you have any other versions installed, uninstall those first, reboot the computer, then try again.
Adobe has an uninstaller here;
OK, try this one: I have tried installing this software left, right, up,
down and safe mode and no matter what, I get the same error message: "you do
not have access to make the required system configuration modifications.
Please rerun this installation from an administrator's accout." Well, I
have. Over and over. Tried the built-in admin account - nada. I am listed
as a system administrator, and it don't work there either. Even tried the
"run as..." option...zip, zilch. So what's the sitch? Is there something
that needs to be turned on? Or what? Tried the ctl-alt-del bit too, didn't
work. What am I missing? Using WinXP Pro, SP2.