CyanogenMod-7.0.0-RC1-Spica-alpha2.2
WARNING: THIS METHOD CAN BE DANGEROUS. DON’T DO ANYTHING IF YOU DO NOT KNOW WHAT YOU DO.
I AM NOT RESPONSIBLE IF YOU TRANSFORM YOUR SPICA INTO A BRICK

You need to have LK2.xx with Recovery for install CyanogenMod!

http://forum.samdroid.net/f62/cyanogenmod-7-0-0-rc1-spica-alpha2-2-a-4442/