I found this in a few different places around the 'net - hopefully it's helpful:

Load Internet Explorer the Fastest Way Possible

• Edit your link to start Internet Explorer to have -nohome after it. For Example: "C:\Program Files\Internet Explorer\IEXPLORE.EXE" -nohome

This will load internet explorer very fast because it does not load a web page while it is loading. If you want to go to your homepage after it is loaded, just click on the home button.