PictoPal is the name of a technology-supported intervention designed to foster the development of emergent reading and writing skills in four and five year old children. Following the theoretical underpinnings and a brief description of PictoPal, this article describes how children worked with the technology; how the intervention elicited their engagement with literacy concepts both on the computer and off; and effects on early literacy learning. Observation results indicate that children are able to work independently with the program after a few instruction sessions. Observation data yield insight in the nature of adult guidance and the way the results of computer activities were implemented in off-computer classroom activities, as well as areas where this could be improved. Comparison of the four pre-post test experiments used to assess learning effects, suggest that the on-computer activities in PictoPal can yield a statistically significant learning effect, but only when integration with off-computer activities is present. (Contains 6 tables and 4 figures.)