If you are operating on Windows now,you can try following steps to install ubuntu 9.10.
1.Download ubuntu karmic iso image from www.ubuntu.com
Download the latest grub4dos from here
2.Extract grldr and meun.lst from grub4dos package to root directory of C:. Copy and paste the iso image into root directory of C:\
3.Extract initrd.lz and vmlinuz from ubuntu9-10.iso/casper/ to root directory of C:(C:\initrd.lz,C:\vmlinuz).
4.Edit menu.lst by notebook,copy and paste following into the file.

timeout 5
default 0
title Ubuntu 9.10 install
root (hd0,0)
kernel /vmlinuz boot=casper iso-scan/filename=/ubuntu-9.10-desktop-amd64.iso ro quiet splash 
initrd /initrd.lz

change ubuntu-9.10-desktop-amd64.iso to the iso filename you downloaded.
5.Edit C:\boot.ini,add this line to the end:

c:\grldr="Ubuntu 9.10"

6.Restart,select boot from Ubuntu 9.10.You will get into ubuntu just like boot up with live-CD and you can click here to continue.