I got few question to ask.

Question 1: When i buy my vaio laptop, its come with a window xp proffesional installer. My question is --> if i get another laptop(any brand), can i use that installer to install on the laptop?? or only can install in sony laptop??

Question 2: For creating recovery cd for my laptop, i just click recovery center, then put in an empty DVD then click start. is it that's all??

Question 3: For the extended warranty certificate, i bought near the end of february, and the person told me that sony will send to me within 3  months. Until now i still haven't get yet, should i call them and ask?? is it ok without the extended warranty cert