The objective of this study is to investigate and model the acceptance of Web and paper-and-pencil questionnaires applied within a company. The study population consists of employees of United Nations agencies at any level with a corporate e-mail account and easy access to an Internet browser. This study uses a crossover design to avoid confounds such as order effects and variability between participants. Acceptance is assessed through the behavioral intention to respond (future) questionnaires, in a model where perceived ease of use, perceived enjoyment, portability value and computer anxiety are proposed as determinant variables. The results of this research do not indicate a difference in the reported behavioral intention to respond to future questionnaires between the two media. Nevertheless, response rates were higher for paper questionnaires.