open internet explorer through command

sir, please tell me the command through which we open internet explorer.

"iexplore" or "iexplore.exe" in the run command window will start internet explorer.

Below command opens your default browser from command line, what ever is your DEFAULT browser, it will open by this command
start <some URL>
eg
Start http://bytes.com
This will open bytes.com in your default browser.

To open an internet explorer particularly use below command at command line:
Start about:blank

In both cases You do not need to know what / where is the executable file for your browsers.

Regards
Harshad Dandekar.