Is this a Comand My2003? It is model number: A220 820 58 89

Also, the adapter, is it really simply plug and play into my existing connectors?

I seem to have 4 main connectors for my radio cassette deck:

1. Which I think is the main power to the unit
2. Power to the CD changer in the boot
3. Speakers
4. D2B optical connection

I also have 2 radio antenna connectors (1 normal size, the other appears to be a very small style antenna connector).

I would be more than happy with the CD version of the Comand and to play CD's through the head unit.

Sincere thanks for your help.