We are developing AudioBrowser, a browser for visually impaired users. This paper presents a usability analysis study that was carried out on the first version of the browser. Due to the lack of availability of visually impaired users not involved with the tool's design, we had to resort to s imulate a visual impaired situation with regular sighted users. Although this may seem unrealistic we believe that this is actually a worst case scenario. The problems identified during this study are described, and proposals for the next version of the tool are put forward.