GOT IT WORKING!
Read a lot and came to this blog. realized that this blog is incomplete as well. then after installing another version of mobile partner which didn't load the configuration files, i just unplugged and replugged the modem and it launched the installer on its own!
Basically the installer package within the app bundle should launch automatically but it doesn't! just go inside the app bundle "right click on the app and select 'show package contents' ". and try and locate the installer package in resources folder. double click and let it install. unplug and re plug the modem. done!
somehow the option to start the wifi hotspot of my modem still doesn't appear like it does on the window machine i have at home.