Hi All and Merry Christmas!!

I'm wondering if this: http://cgi.ebay.com/ebaymotors/BMW-G...ayphotohosting is compatible with my 09/02 x5 with no current nav system but the business cd.

I've already read from here that it's hard (or even impossible) to make aftermarket oem-nav but can anyone be more specific? What should I check or buy besides thisone.

Thanks in advance.

Vesku.