Chrystal HD

I am thinking about installing the Chrystal HD, and from what I understand, it replaces the Wi-Fi card inside the ATV correct? So that makes the ATV Ethernet/LAN connected only after installing the Chrystal HD?

Correct... The Crystal HD add-on card makes the AppleTV so much better than it already is. Not an expensive upgrade either...

Please, need help. The XBMC is not recognizing the broadcom card. I can't see it within System>Video>Playback. Even I followed all the suggested steps for installation twice. I have tested and installed the card in another ATV and it works fine but in this one not works. I don't know what I am doing wrong. thank you in advance for any help.