The pragmatic approach might be to troubleshoot the netbook a little further. Does the POST run at power up? Screen light up? Have you set the right "boot from" options in the BIOS? Does it boot using a "live" CD / usb stick image? If you're using an external CD drive bear in mind that they are power hungry and will likely need the USB "Y" lead that plugs into two USB ports on the netbook (one for power + data, t'other for power only). This is important because an optical drive may appear to work perfectly in normal usage via a single USB lead, but when using it to install an OS there is far less tolerance to data errors caused by undervolts...
The netbook's manufacturer should have a service manual available for download on their website - these are priceless for finding that last hidden screw that's holding it together / lifting the keyboard out without tearing the ribbon cable, etc...
The hard drive can be tested as a secondary on another PC (watch for viruses if it's from an unknown source...)
Netbook motherboards are highly integrated, but a non-booty DOA condition can be troubleshot to a certain extent by disconnecting non - essential periperals, like wifi / bluetooth / sound modules, etc.
If something's broke then the same thing has almost certainly happened to someone else, so google your heart out. Maybe there's an "owner's club" forum.
Parts can be cheap as chips on ebay, but do your research - display x may require motherboard y. Watch those part numbers - the service manual will help here. If (for instance) you know that your screen is good and you find a 'book on ebay with a broken screen for cheap then email the seller to ask 'em the serial / service tag so you can cross-check compatibility.
It may sound a bit daunting, but it will be easier than trying to interface your display to the Pi, supplying power to the interface, Pi and screen, enclosing it all and whatnot.
Fixing stuff can be very satisfying (and I guess it flexes the same learning, logic and patience muscles as programming). Good luck!