I can only reccommend to try this, it really looks cool
Posting screenies isn't really much used since this consists of animated glow maps (just try it and you'll see why screenies aren't much use -- but if you manage to get some good screenies, feel free to post them

)
the best screenie i was able to get
To get them to work, you must make sure the game will NOT find any corresponding PCX file to it. To achieve this rename the glow map to something like XXXX.pcx.orig, and if you have the glowmaps VP you'll have to either build a new VP or extract all the glowmaps to the maps dir and rename the VP, and then rename the pegasus glowmap to something else. Else, FS2 will revert to the PCX glowmap.
Nonetheless, it's worth it, believe me.
Download animated Pegasus Glowmap