I am currently doing a research paper that requires the estimation of a thereshold model. I have gone through the reference manual for the pacjage "tsdyn" and i am failing to see how the the threshold models provided by R can estimate a model in which the other control variables exist or are included in the estiamtion of the model. Any help provided will be greatly appreciated Andrew Phiri Post-gratuate student at the North West University (NWU), South Africa --------------------------------- Luggage? GPS? Comic books? [[alternative HTML version deleted]]