So Internet Explorer 7 is out but can you answer this ?

OK cool delighted to see IE 7 finally out of the woods. But for a while I have still to work with IE 6 (a lot of my customers (schools, teachers, etc...) are not at all techies and I need to make sure the code I do still works fine with IE 6 for at least the next year.

So does anyone have an idea on how to keep IE 7 and IE 6 running together on my laptop?