Purpose of the Essay: The number of users of "Internet banks" is continuously increasing as more and more become aware of the possibilities offered. Therefor the demands of an "Internet bank" designer also increase to make sure the "Internet bank" is usable to as many different customers as possible. Many guidelines have been developed during the years to help designers to design usable graphical interfaces, but are they useful even when designing "Internet banks"? That is the question that we are trying to answer in this essay. Target group: This essay is first of all aimed at the people designing "Internet banks" and secondly to other designers within the area of Internet application design, to hopefully help them in making even better and more user friendly Internet applications. It can also be useful to students studying graphical Internet design. Method: In the search for answers to our questions we have concentrated on the design of MeritaNordbanken's "Internet bank" "Solo". By using information in books discussing design of interface usability we have tried to find guidelines used in the design of "Solo" and from that evaluated whether or not they are used as intended. We have also used a test group to get a second opinion in the question of guideline usage. The test group was intended to give us insight into the usage from an independent user's point of view. Our opinions were then compared to the users', to give us an answer as to how the guidelines were used and if changes where needed to better support the design of "Solo".