Hi, I have this ACER ASPIRE 5810T laptop with a dutch Vista Home Premium installed. I would like to install the english version of the OS. I tried to use an OEM cd and use the key that is printed on the back of the laptop but Vista says the key is not a correct one. Is there a way around this? I see there's a lot of knowledge on this forum about that but I can't filter the correct information for my case. Any help is appreciated.