|Each browser uses its own exe. They do not use iexplore.exe.|
I am in Firefox right now and when I go to task manager there is no iexplore running.
The internet uses no files. I uses a protocal called Hypertext Transfer Protocol or HTTP. A server will send the page to your browser over port 80 to your browser and it converts the HTTP to to layer 7 so you can read it. Some browsers are better at this than others. So far I find Crome to be the best.
Again what the heck are you trying to do?