Default programs not working

[Adhammagdy]

I have recently installed winVista 32 ultimate, created admin account, and turned off uac.
But i found that all default program options grayed out and i can't set any associations and they're all locked to windows default, even when using my programs' interface to change associations, nothing happens
i even enabled the builtin admin account the options are still grayed out, also i tried reenabling uac.

[HappyAndyK]

Log in as Admin. Turn on UAC. Restart.

Again login as Admin, as you need to be logged in as an administrator to change default programs.

Default Programs Editor for Windows 7 & Vista | The Windows Club is a good good 3rd party app which may interest you.