I'm glad I kept copies of Cacko 1.23 for my C3100 on a backup.
Someone needs to get in touch with maslovsky, since all the files links are broken.
It seems his site is the only source for these ROMs, unless someone else has them on a user site.
bubox, I'm also searching for the Cacko ROM for the 700 for you.
I suggest if you do find the correct ROM, make a copy and burn it to a CD or DVD for safekeeping.
Actually, after doing some more searching, I discovered these files are on oesf.org
The links must have got broken when the site was moved.