I finally received that EYE-FI card yesterday, it took about 7 days to be shipped from the Netherlands to Belgium (it's about 144km from Waalwijk to here; I think it came by a horse pulled lorry, which is very ecologic
).
Anny way, it works as a charm! It's transmitting Raw files, fast enough to my taste, if the camera is whit in 4m to 5m from the MacBook.
It just took me some time to realize that the Eye-Fi Card (having it's own SSID and WAP2 password) had to be added as a full AirPort network.
It's funny to see that pictures, shot when the Eye-Fi is not connected, are transmitted in a later stage when there is a connection. Pictures shot yesterday evening where appearing this morning when the camera and the MacBook were fired up, and the Wifi was connected.