To post pictures, just put the IMG tags (without the x) around the picture's address/URL.
[xIMG]http://ecomodder.com/forum/member-hoover-albums-2004-chevy-silverado-4wd-z-picture3943-1-louver-back-solid-front-top.jpg[x/IMG]
I can't give specific instructions on getting the picture's URL unless you're using a Mac.
From your album here:
http://ecomodder.com/forum/member-ho...front-top.html
Great job with the aerocap, I've seen it around here. Give the fuel log a try. It's fun and gives you a neat little graph. If you have the data from your tanks, you can just add it all at once.