I just got the cable in and it works. So yes you can put an led backlit scree in place of the ccfl. your just need to replace the cable to. Cable Part # R267J.
I have a dell inspiron 1545 with a cracked screen (CCFL Backlit) and a a replacement (LED Backlit). I,ve orded the cable today and should hve it here in a few days. I will let you know if it works.