Many people wonder on how you do this with css, so here is how.

1. Use the css code you get from my css tutorial... and add the code below any place in it.
u { color: #000000; font-family: arial; font-size: 7pt; font-weight: normal; text-align: none; border-bottom: 1px dotted #000000; }

CODE EXPLINATION

Where it says color: #000000; in the code you choose the colour of your underlined text.
Where it says font-family: tahoma; you choose the font of your text.
Where it says font-size: 7pt; you choose the text size you want.
Where it says font-weight: normal; in the code you can put in if you want it bold or anything. Then just type BOLD in there.
Where it says text-align: none; you can choose where you want the text to "appear" in your table. Just try it out... left and right.
Where it says border-bottom: 1px dotted #000000; in the code you choose the type of underline you want.. And the colour, this is where you choose the colour of your double underline. Most people only use the border types dotted and solid. Try them both if you want to.

That is all you need to know when making a double underlined text :)