Application Documentation

We need assistance with technical writing for a software application we are publishing. Qualified person must accept, understand that the product is pre-release and, as such, some defects remain. So, in addition to documenting the application, the qualified person will also accept as part of their responsibility defect identification/recording/submission to development department. Documentation will be written in MS Word. Other tools such as Visio, Illustrator, etc. may be used as well. We are open to suggestions from the qualified candidate about usage of other tools. We are hoping that we will find someone with experience with point of sale applications. English MUST be the person's native and primary language of use. We are looking for efforts to begin immediately.