installation - Installing Ubuntu desktop cd 12.04.3-32bit without installing Grub

I want to install Ubuntu desktop 12.04.3-32bit without installing grub.i have googled for the same and found (Installing Ubuntu 12.04 without installing Grub) ,tried the same like below but it does not help

linux /casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity ubiquity --no-bootloader quiet splash --

I can able to achieve the same with alternate cd image with preseed and desktop image with preseed but am in a position that i have to achieve desktop image without preseed.

Please help me on this

Regards
Senthil