@Frankr 

I will try to help some.

As I understand the SD WIFI card acts more as a router than a device. For example to connect SD WIFI card with an iPhone, you open a browser and connect using an IP address much like you would connecting to a router.

There was a product EYE-Fi  that would connect to a router.

See https://www.youtube.com/watch?v=6Z7XsEKONTs (see toward end) and http://attachments.content4us.com/datasheets/MANUAL_CMP-SDHC10-32W%20ENG.PDF (search laptop) for some things that may help you connect to the desktop.

Hope this helps.