hello there

I've had my nexus 7 very recently. on the fourth day I bought it I got it out of my pocket and I found a crack on the screen. now the outer glass is cracked and the upper area of the screen is not responding to the touch. although all of the screen is still displaying stuff normally.

as you expect this is quite annoying since I keep rotating my tablet around to get to parts of the display :-D

now I've found digitizers being sold separately (without an LCD) on eBay for 72$. and since I live in Egypt I'll have it shipped from China and try fixing it here.

some people said I should get a used one or get a whole screen for easy replacement (LCD+ digitizer).. but I really can't afford this option.

my question is this. how doable is this? and how can I replace the digitizer and leave the LCD intact?

thanks in advance.