Can i use my Dell Laptop Windows Disk to install Windows in other PC?

I got a Dell Laptop which has Windows 7 Pro Original CD.... Due to some emergency case i need to install Windows 7 on some other PC.... Currently i have only 1 disk of Windows 7 that is the Dell one.. Can i use that disk to install Windows on other PC?? I mean if i install using that CD, will it activate using same key i can enter another key which i have??