my laptop is connected to my tablet which is connected via wifi hotspot , I want to also then get access and connect my pc to my laptop to be able to use the wifi hotspot from my pc as well
You'll need to enable ICS... internet connection sharing on the laptop and connect it via LAN cable to the PC....
It would be easier for you to just buy a Wifi USB Dongle and plug it into the PC and connect everything to the Wifi Hot Spot....