I am designing a knowledge center site for a large consumer company. Currently there are more than 800 pages on the site that are all different. In order to navigate the site, we decided to go with drop down menus that had up to three layers. However, the associates of this company are limited to a screen resolution of 900x1024 and wouldn't be able to view all the pages in the menu because they would go off the screen to the right. Any suggestions on a better navigation plan?
Without knowing any specific details I may suggest the following:
You might also want to have a look at elastic lists:
New York Times Archive search http://moritz.stefaner.eu/projects/elastic-lists/NYT/
Nobel prize search http://well-formed-data.net/experiments/elastic_lists/