IE6 will not work with Vista and there is no way to 'revert' since IE7 is a part of the OS. Thus, for as long as you're using Vista you'll have to use either IE7 or an alternative browser. As to returning to XP, it's a valid option provided:
1.) You have a copy of Windows XP and a valid license that's not being used. (Otherwise you must purchase one.)
2.) You're willing to track down any necessary drivers yourself. (The manufacturer likely doesn't support XP on that model.)
3.) You don't mind reformatting the computer, starting from scratch again.
Not the best of news, but at least there's a glimmer of hope.
I just bought a new laptop which obviously came loaded with the ugly Vista and IE7.
How can I uninstall IE7 and install the good IE6??
By the way, I would also like to get rid of Vista and install XP. Is it posible?