Windows 7 - "unpacking" problem in RC installation

Hi... I was wondering if anyone else is having same problem as me when trying to install the 32-bit RC. I have created a 50 gigs logical partition on my hard drive to install windows 7 on (i'm using Vista Home Premium on my Dell laptop). on installation screen i select the drive for the new installation and so it goes to the next screen where it shows a list of bunch of stuff that it's supposed to do. The first one is "copying files" or something along those lines which gets checked and so it moves to the second thing that is i believe called unpacking the installation files (or something similar). My installation "freezes" there as it shows 0% for about an hour or two and then it errors and cancels the installation.
any help would be much appreciated.
Cheers

Hi,houman

Try re-burning the iso at 4X speed with imgburn

Replying from the windows 7 on my laptop ... worked like a charm... thanks a lot Anthony

Your welcome, enjoy windows 7