Voice over required

I am developing a website for which I require voiceovers for PowerPoint presentations. I require high quality voiceovers from individuals with strong speaking voices - either male or female. The recordings will need to be provided as mp3 or similar format, and must be without background noise.

This first advertisement is for a single voiceover of around one hour - i will provide the script. However, this site is going to be an ongoing concern and therefore there will be a further 9 hours of recording prior to launch, and then probably a further 2-3 per month on an ongoing basis.

I reserve the right to employ several individuals to ensure that my site has variety. However, I guarantee that anyone chosen who meets my requirements will receive repeat commissions from this.

Applications with sample voice recordings / links to other work will obviously be scored more highly.