In order to open the ALM Add-ins page you can either open IE and go to the main ALM page, then select Add-ins or you can directly open this URL in IE: http://192.168.1.10:8181/qcbin/addin.html
Both ways will bring up the ALM Add-ins page where you will find the HP ALM Client Registration add-in. Please register ALM components (run both Register HP ALM Client and Register HP ALM Site Administration Client) and try accessing the server using the script once again.