As with starting any application, part of the time it takes to start Visual Studio is spent hunting for it in your Start menu.
Many developers find it much easier to simply open the Run dialog and enter the name of the application executable.
To do this with Visual Studio, all you need to do is open the Run dialog (Windows Key-R or Start Programs Run), then type DEVENV and press Enter.
This is by far the fastest way to get the application up and running. There is also a switch for devenv called /nosplash, which will suppress the splash page for Visual Studio.
So, you can type devenv /nosplash into the Run dialog (or the command prompt) to have Visual Studio start up without the splash page.