Media queries, which are used in PageLayout are not supported in IE8 and below. You can do little to enable this behaviour.
It is possible, however, with some limitations in mind, when targeting a specific subset of older browsers (say only IE8) to achieve fluid design. But not responsive.
To target IE7 you will have more limitations and for IE 6.. well.. it's going to be much harder.
And speaking for IE6, you should know that's it's nearing EOL. On April 8th Microsoft officially ends support for Windows XP (worldwide, except on selected ATMs), which is the last operating system that supports it. So you should seriously consider if you really need to allocate the effort to make the design work on IE6 / XP.
Can you attach a rough sketch of what you want to achieve and we'll see if something can be done about older borwsers.
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