Of course you have backed everything up to CD or DVD so it is not a problem !
If you have NOT backed everything up then you have learnt a valuable lesson about WHY you should back things up.
Have you tried going into Windows in SAFE mode.
As Windows starts press F8 and it goes into SAFE mode. here you can start Windows is various ways, using minimal drivers, so you may be able to at least get Windows going.
If you do then copy fiels to a USB stick so you at least have them off the laptop.
The other option is to buy a hard disk caddy for a laptop hard disk and plug it into a USB port on another PC, you may be able to see the files and get them off the hard disk.
Like this
http://www.parts-people.com/images/products/su prslim.JPG
Make sure you get one for a laptop hard drive not a normal hard drive as laptop hard drives are smaller.