Anybody knows how to program the smoke system?

I know we can use the smoke system to program special effects in fs2004 like dropping bombs and missiles.
Anybody know what all the parameters in the smoke system like
particle attributes stands for?
Also I have a problem with the bmp files used in the texture file of the effects. I understand that fs2004 can only take bmp files of a max size of 512x512. I scanned a AIM120 from the net, convert it to bmp size only 16K well below the 512x512. Put it to the test and it only show up as a white square in fs2004. Anybody knows what happened?
Anybody know what all the parameters in the smoke system like
particle attributes stands for?
Also I have a problem with the bmp files used in the texture file of the effects. I understand that fs2004 can only take bmp files of a max size of 512x512. I scanned a AIM120 from the net, convert it to bmp size only 16K well below the 512x512. Put it to the test and it only show up as a white square in fs2004. Anybody knows what happened?