Internet Browser Help

I recently instaled Windows 7 RC 64bit build 7100 on an HP Pavillion DV2700 laptop and now my firefox, google chrome, and internet explorer 8 32 bit will not work. I can use a 64 bit IE but nothing else.
The only idea i have is to try and instal the 32 bit windows 7 with the 64 bit together as i've heard other people doing but i have no idea how that works or if it would even do anything.
if anyone could please give me any suggestions or help please do because i despise IE 8 or any other version.

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