[Tony Niar Brain]

The problem of obtaining a photograph of one of these planets is the star that it's orbiting. It's like trying to single out a single particle of dust that is directly in front of a halogen bulb. It's just hard.

[RightWhale]

a single particle of dust that is directly in front of a halogen bulb

An apt comparison. I believe they have actually imaged a few of these, just a spot of light next to a really big spot of light, but most of the extrasolar planets so far have been found by other methods such as a subtle shift in the starlight spectrum or infinitesimal but regular change of light output.