The best solution on Windows is to install the browser in a subdirectory of the shotfactory folder, e.g. shotfactory\firefox30, then enter firefox30\firefox.exe in the browser command field.
65.
The billing address has too many lines.
66.
This name is reserved.
67.
Activate your Browsershots account
68.
My Screenshots
69.
May I use the screenshots of my own webpage for any purpose?
70.
The best solution on Linux or Mac OS is to create a simple shell script with your desired options, make it executable (chmod a+x), put it somewhere on your PATH and then use the name of the shell script as the browser command.