IE7, when installed, replaces IE6 in the same instance of the OS. What you need, I think, is a multiboot system offering different partitions and a boot manager that lets you choose between the one and the other. I don't know if XP supports this for 2 copies of XP on the same machine, but it certainly does for XP and 98 or XP and Vista.
Here's a link: http://articles.techrepublic.com.com/5100-10877_11-6157570.html
Better post in the Vista or XP forum if you decide to go this way and need more help.
Kees
I would like to know how could I install in my laptop both IE 6 and IE 7. I "googled" it but I couldn't understand about a virtual something.
Anyway how coudld I do this?, of course I would like to do this in the simplest way possible, yes it has to be in the same computer.
The reason I want to do this is pretty obvious, I would like to be able to preview my web site desing in both versions of IE.
thanks a lot, Marcelo.

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