oh, ok. Maybe i wont need help after all. Here is what i propose to do:

1. Boot into liveCD
2. in terminal type:
sudo nautilus

3. Ctrl+H to show all files and folders
4. Move all files from liveCD to linux partition except /home and /usr

However, I woud like to know if there is another way to do it using the installer on the liveCD or something similar.