Try Google SketchUp -> http://www.sketchup.com
Don't even try using it without going through the tutorial. It's pretty easy to use, but only if you go through the tutorial. This is the stand I built.
I use gloves almost all the time now, and wash before and after. It's just a good way to help keep whatever may be on your hands out of the tank, and whatever is in your tank out of your body. Not worth the risk, IMO.
You might want to get a Big Digital Temp Alert -> http://www.marinedepot.com/md_viewItem.asp?idproduct=RB1313
It has saved me from a heater failure before.
I'm just glad I bought my little Beetle. It has a turbo diesel and gets 48mpg. I filled up two days ago at $2.64. It's $2.79 now and gas is $3.09 at the same station.