if its IDE you can get a usb->ide housing (check
ebay) for around a fiver it seems...
if its sata and takes the same power/interface, which it should*, then if its not automagically picked up in windows, you'll be able to find it in controlpanel->administrative tools->computer management->disk management, and then map it to a drive letter and get the stuff off that way
*alternatively*
download a copy of ubuntu livecd, boot the laptop (once you've got your hands on it), then stick a memory stick in the laptop and copy all the useful stuff across that way - assuming a) the laptop has a cd drive and b) you have a memory stick/usb key to use
* i think