If you're new at network drives, just follow these instructions for yourself to find the Map Network Drive option in Windows Explorer.
When it comes time to enter an address in the "Folder" field after you've chosen your drive letter, just type it out like this (no quotes): "\\192.168.1.1\" but be sure to use the IP address you statically assigned to your FlashAir in your router! Also make sure those backslashes are facing the right direction!
If you'd like the drive to be always available, check the box saying "Reconnect at sign-in", and if you'd like that process to kick off faster, open an administrative command prompt and type the following (no quotes): "sc config webclient start=auto" which simply auto-starts your WebClient service each time you login. Otherwise, the first time you try to access the drive each bootup, it will take a moment longer to kick off that process. Regardless, that last step is purely optional.
Now whenever I click the CPAP Importer button in SleepyHead, it automatically finds the mapped FlashAir card as if it's plugged directly into my machine. Bonus! If it ever gives you problems, just check out your Windows Explorer (WIN+E) and make sure it doesn't have a red X next to the new network drive you've mapped.