You can only do this if you have Vista Ultimate or Enterprise.
With Ultimate, you can download the language packs for free.
Just open Windows Update, choose "view available updates",
and check the language pack you want.
Afterwards, from Control Panel (categories view), just choose
"Change display language" under "Clock, Language and Region".
Pick your language, log off, log on, and done.
If you have another version of Vista other than those two,
you'll need to purchase a "full version" of Windows
Vista in your desired language and perform a "clean install"
or install it on a separate hard drive or partition.
--
Carey Frisch
Microsoft MVP
Windows Desktop Experience -
Windows Vista Enthusiast
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"renatahabdas" <renatahabdas@discussions.microsoft.com> wrote in message news

E6CD619-61F3-44BA-8AE6-2FCA28EB9746@microsoft.com...
Hi
I'm polish but I live in england. I have bought the computer with vista in
english version for my brother as a present. unfortunately he doesn't speak
english. How can I change the operating systme language from english to
polish.