I will help in making CM7 for Galaxy Y.I have ported CM7.2 to Optimus Me and ICS (developing stage) and my facebook Group for Optimus Me Development.I dont own this device but my friend has this device.So i will try .So you got it booting ??
have you replaced the touch screen files with galaxy Y files ??
files in the usr folder (icu) also the touchscreen firmware files ??
do you have the logcat and dmsg outputs ??