Dumbledore's painting

[magicalme9]

No: HPFGUIDX 136452

I don't know whether this has been discussed yet - haven't seen it, 
but if yes then please point me to the message.
At the end of the book a painting of D appears in his (former) study. 
Couldn't the painting help Harry in book 7? How much of a wizard's 
knowledge and abilities get transfered to the painting? Isn't it 
possible that D's painting can talk to Harry and explain if Snape 
really killed him, how to go about the search of the Horcruxes etc.? 
The other paintings are able to communicate and to remember (e.g. 
Phineas Nigelus) stuff of their own lives. So are paintings sort of 
persons without the actual ability to do something actively, but with 
the ability to help and to communicate? And since D was such a 
powerful and famous wizard in what other institutions would his 
paintings hang as well?
Any thoughts on this?

Magicalme (who just came back from a 2.5 week holiday and tries to 
catch up on the 3000 or so messages posted since July 19th)