[H] replacing a laptop LCD

[Winterlight]

Today, somebody gave me their old laptop. Actually, it is not 
very  old  at all, it was purchased new  in 09 a little over a year 
ago. It is a HPG70-463CL which is laptop with a 17 inch screen 
designed to be parked. The had it on the floor while moving their 
furniture and stepped on the LCD which pretty much killed it. The 
computer itself works fine plugged into a an external monitor. I see 
where I could buy a new screen for around 120-150 but how difficult 
is it to replace? Anybody recommend where to buy a screen, and any 
tips of replacing this one ... thanks.