ownsyouall :
you can install it via windows using wubi. just put the dvd in and autorun the wubi installed on the dvd
I'd agree with Pyroflea on this. From what i'd observed when i used wubi, It installs within windows. Making it more like a program running though windows than being it's own os. Also you dont have the option to partition stuff (like needing swap space.) So your just have just only your ram and thats it.
@sameya_ahmad. As other people have said, You'll need to select your CD rom drive in the bios as the first device to look (or if you have a temporary boot option, you can select your CD rom drive there) . If your still having trouble, there is another option (which is what i did to install ubuntu 10.10).
You can put the CD installer on a flash drive (needs to be 1GB or larger) and you'll need a program that can put the installer on the flash drive and make it bootable. (my favorite http://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/)
Although you'll still need to select it in bios to boot up. hope these helped.