It's probably easier and CHEAPER to just buy the computer with Windows 7 already installed than trying to downgrade (some manufacturer do offer a downgrade path). Many models with Windows 7 are identical to current models with the exception of having Windows 7 instead of Win 8....and actually probably are a little cheaper to buy.
Thanks for the advice. I was looking to buy a brand new V3 i7 laptop but Acer only seem to supply Windows 8 pre installed on their new stuff now. So many people have issues with Windows 8 that I don't think it's a system that I'm going to enjoy using so I think I'll look for a different make.
OK, so I have '8' did not like it, but have downloaded 2 programmes "Skip Metro Suite" and 'Classic Shell" both are good free progs, so get the benefits of 8, and the look of '7' and it makes life a lot, lot easier.