Need someone to narrate a short online video

Hello, I'm looking for a man's voice (english being the mother tongue) to record a video for my website. The video consist on showing how to play a specific way on roulette (I will give the link to download the Casino software and ALL the instructions), on an online Casino (I will give all the important details later). Kind of a "How To" video. I would like to give a visual demonstration using a software like TeamViewer, so the person can see exactly what I'm looking for. This video needs to be short (2 to 4 minutes MAX) and it will be posted on my website. I will need a general release, giving me ALL the rights. I need someone with a nice voice, nice elocution , very well spoken... I order to retain the services, I would like to have a "demo" of your voice (any regular format). I will provide the software to do a live recording and screen capture, directly on your computer (free software). It needs to be as professional as possible (no background noise).