You don't need to have a wired connection to your internet. I run Instacheck on my wifi-connected laptop. I wouldn't recommend trying it with XP, like Esmeya said, there hasn't been any luck.I don't have an Ethernet cable, but I do have an old wired desktop that runs XP. Could I download and install everything on that old computer and use the WiFi signal it transmits as a hotspot? Or does it still not work with XP?