RedVector.com, a portal offering online more than 400 continuing education courses for professionals in engineering, architecture, interior design, construction and land surveying, has upgraded its Web site to provide a "Four-Tiered Course Level System." Customers can choose between platinum, gold, silver and bronze level courses, with each level catering to a different level of experience. The company recently announced partnerships with the University of South Carolina's NetGen Learning Systems, ConstructionEducation.com, e-Constructor.com and eFunda.com. It also announced that it will manage, track and submit completed continuing education hours to professional organizations on behalf of its professionals at no extra charge.