I too have this kit, and would LOVE to have support through LCDWriter. As of right now, the only info I am able to pull from 7MC is music information.
If it helps, the whole LCD2USB project is an open source one, detailed here http://www.harbaum.org/till/lcd2usb/index.shtml.
I gave the lcdsmartie-compatible DLL a try as a writer for LCDWriter (A shot in the dark, I know), but no dice. Any support for my LCD would be greatly appreciated, or information on how to implement it.