How can I use a Windows Vista

For several years ,I did not use any windows OS, Windows xp OEM with dell computer maybe a better choice for me than vista. But at Australia I saw more and more people have been use Windows vista because they all buy the computer from the some company like HP DELL or LENOVO.

So if I want to repair computer at Adelaide I must use vista and MAC OS.

I have one Windows Vista home basic from my lost  Sumsung Q70 laptop,But when I install it at my DELL D610 it can not be active.Maybe I need a dell oem windows vista ,It’s so lucky my dad Dell PC has one. I will try it tonight.