Adding lit and unlit states to a non-lamp object

[zeroth]

I've created a wall sign based on the "Two Dogs and an Olive" painting from Nightlife, because it had the largest possible texture associated with it. Now I've realized that it needs to have lit/unlit textures, but I have no idea how to add these states after the fact. The sign doesn't need to actually cast light - just to look as if it's lit from the inside when it's turned on. I know this must be possible, because the "Sign of Elliptical Joy" has both lit and unlit states while not actually casting any light.

Or, do you think it would be better to base the sign off a wall lamp (perhaps the BeamOLite Compacto from Nightlife), delete the light it casts, and increase the size of the texture? If so, help on how to do that would be appreciated.

[IgnorantBliss]

I would really recommend cloning a lamp instead, as adding changing states to an object it is hard. Increasing the size of the texture is easy, you just need to use the DDS Utilities to import it (Numenor's object recoloring tutorial explains how to install and use them).

[zeroth]

Wow, I never realized it was that easy to change the sizes of textures. Thanks! Can you tell me what in the package I would need to delete to remove the light the sign casts?

[IgnorantBliss]

Sorry, but I'm not an expert on the light files and have never tinkered with them, can't say which one to edit or delete.

[zeroth]

In the end, I realized it would just be easier to clone the "Sign of Elliptical Joy", which already has the effect I want, and use that as a base for my object. The simple way is usually the best!