graphics help

Take a look at the attached files, [login to view URL] & science-icons.ai. The are web icons for a new website I am building. I need two more icons in this style. For more icons, see genome.vbi.vt.edu. Two icons: 1. I need icon that somehow conveys "tuning knobs". See the attached knob images. The icon might contain one knob or maybe 2 or three. Whatever looks nice and it should again be drawn in the web 2.0 "shiny" icon style as the attached images and web images are drawn. 2. I need a second image that conveys word processor editing. One idea I had was the letters: "ATCG" followed by the vertical curser symbol that you get flashing in most word processors. And then maybe a mouse pointer icon somewhere near the text or the cursor. You can use this idea or some thing else. Please submit a very rough sketch of your idea so I know what you have planned and if you have examples of previous web graphics you have made, please share them with me. Thanks.