This study used a multiple baseline across subjects design to explore the effects of using a computer graphic organizer program during planning on the narrative writing compositions of four fourth- and fifth-grade boys with Specific Learning Disabilities (SLD). Four dependent variables were measured: total number of words, total minutes planning, number of common story elements, and overall organization. Baseline planning was done with paper and pencil, while intervention planning was done using the computer graphic organizer program Kidspiration 3.0 (2011). Compositions in both conditions were written and edited using paper and pencil. The results indicated that computer graphic organizers used during planning had a positive effect on three of four dependent measures. When looking at mean scores, participants wrote more words (from 20.25 to 41.86 more), planned for longer periods of time (from 1.00 to 5.00 more minutes), and included more story elements in their compositions (from 0.80 to 3.10 more out of a possible 6.00). There were nominal to no improvements in overall organization across the four participants. The results suggest that teachers of students with SLD should consider using computer graphic organizers for narrative writing planning. Future research should investigate the effects of computer graphic organizers with other writing genres, across multiple writing days per composition, with participants of varied demographics, and/or in combination with other remedial composition instruction.