White screen!!Help!!Tilt (8925)

[HTC*Tilt*]

Hello all,
I'm new to site, very nice place
Anyway today I dropped my tilt on concert, fell like 4ft and landed flat on its back.
Now when i turn on i can here it start up but just white....I tried calling it but it shuts it self off after starting up.
So my question is do you think its screen or something else???
And my sister has a Wing that she does not use any more (its a bit worn) but screen still works< do they take the same screen?
So I could try that one before buying a new one..... Thanks!!!!!!!!