Use an editor of your choice. Kate is good if you are accustomed to windows
Start Kate or kedit (or gedit) and open the file /etc/lilo.conf
You might have to be root to do this (but probably not).
Copy paste the contents of your lilo.conf file here.
Also, open a console. Run fstab -l (-l is a lowercase L)
This you will have to do as root.
Copy paste the output of the fdisk -l command here also, so we can see what you have setup and what does lilo.conf point to.
Until then!