Vista - Using Ildasm.exe to extract an image in a PictureBox

Greetings,

I'm looking for a helpful link if anyone out there has one.

I've got a .NET executable. In this exe are a number of forms, one of
which contains a picturebox that has an image that was as a local
resource.

I'm wondering if it is possible to edit this resource through
Ildasm.exe.
Currently, I can't even find the resource. Is this because it was
added as a local resource rather than as part of a resx file?

Anyone know of a good place to go for this info?
If this is the wrong thread, any idea where I should post?

Thanks in advance,
-Mezz