I need around 10 short explainer videos

We have an exciting new website launch and need to get somewhere around 8 to 12 short explainer videos put together. Most of which would be around 30 seconds in duration, with a couple at around a minute / minute and a half.

The videos do not require much animation, nor would they require actors. We would like clean and simple white-board style videos done - which would also make use of a many screen shots from proprietary software - to demonstrate how it works in a simple and visual manner.

As an example, this is an older video that was made for the old website - and we are looking for an updated version of this, but the idea is very similar - http://player.vimeo.com/video/68287615

Happy to discuss any other details you may need or answer any questions you may have.

Please submit samples of previous work together with your reply.

Thanks