When possible, use Cascading Style Sheets to control fonts. If you have font specifications in every text line, the surfer's browser will have to parse and calculate them every time. DreamWeaver has a command that lets you clean up code from other programs. Word files and Front Page are notorious for packing lots of unnescessary HTML into their code. This useless code slows browsers down.
Clean code is fast code.
Nested tables make the browser resolve the innermost table before it can lay out the outermost table. Your customer twiddles thumbs waiting for this to happen. Always define your table dimensions in either pixels or percentages. This helps the browser create the layout quickly. Include image dimension tags for all your graphics.