I need vista back and linux mint removed

Hello,

I recently got a gateway laptop from my sister. It has linux mint installed on it but i can see by the sticker on it that windows vista home premium was originally installed. i have found alot of videos on howto delete linux if its installed alongside windows but thats not the case i only have linux installed on my machine atm i need a howto for dummies guide on deleting linux mint and installing windows vista. btw i have no floppy drive

Thanks