Hi!, welcome...
Since you cannot see the HFS window while it's running as a service, you could do this
:1) Stop the service (if started) that runs HFS
2) Run HFS executable to get normal GUI
3) Alter settings *
4) Save and exit HFS
5) Start the service that runs HFS
* = On step 3, you choose the template, load the file system, configure your preferences, and before you go to step 4, click on "Menu -> Save options -> to registry (all users)", in order to make sure that your service instance use your saved options. You could also follow
THIS post, if HFS is having problems loading your VFS file.
Please get back if this has solved your problem or if you have any issues (since this will help another users having the same problem).
Cheers,
Leo.-