Flash Banner Design

We're a small french company that make audio plug-ins for musical production. We need a new banner (actually 3 format versions of that very same banner: 300x250, 728x90 and 468x60) to advertise our new product. Budget: between U$70 and U$120. PLEASE POST A LINK TO YOUR PORTFOLIO / PAST WORK. The banner will be almost ALL Type, no illustration needed. The only images to animate (from a static screenshot) will be display one of our software interface as if someone was tweaking a knob (we'll provide this screenshot and we can show some banner examples of what we mean by this 'animated screenshot'). We already know what we want as final result, so we need someone able to understand a briefing written in english (or french) as well to feel free to give us suggestions/creative inputs. Our customers are music producers and/or computer geeks, so we'd want slick animation, good timing - somehow the same timing of a TV ad or a movie trailer.