I can't install CityXplorer-Paris in eTREX (Vista Cx)

Hi! I downloaded here the CityXplorer-Paris, but i can't install it in my GARMIN eTrex VISTA Cx from PC. In GARMIN page says these:
"[Please Register or Login to download file] "
and these:
"[Please Register or Login to download file] "

How can I solver this problem? Thanks.
Teixeirinha_

At what point does your problem occur? You have no MicroSD-Card, you can't copy the file on it, your device has no µSD-slot, the GPS doesn't recognize the IMG-file? Tell us more ...

I have microSD card, slot for it in device and i can save files into card. No problem. But i can't install or I dont' know how (i'm begginer in these things). My steps:
1- UnRAR files to SDcard (except keygen) in folder :/GARMIN/
2- Put SDcard into slot.
3- Turn on the device.
In GARMIN's page, like I transcribe in up, says this: "Some Garmin Mode devices require a card reader and microSD/SD card in order to download supplemental mapping directly from the Garmin website. These devices have a special way to communicate with the computer which will not allow the mapping to be loaded directly to the device."

There's another way to install? Please describ the steps. Thanks.