How to launch Internet Explorer from the command prompt?

I have to launch Internet Explorer from the DOS command prompt.

I have done it with Firefox, like:

cd \program files\mozilla firefox\
firefox

How to do the same with Internet Explorer?

Just type

c:\windows\servicepackfiles\i386\iexplore.exe

You can also use

"C:\Program Files\Internet Explorer\iexplore.exe"

Though you're asking for Internet Explorer: just in case you want to use the default browser, then use the start command:

start "" "http://superuser.com"

You should cut its location to its original location, "C:\Program Files\Internet Explorer\", and then you can start it by using:

start iexplore