In this project, a format-converting tool with an X/Motif based interface has been developed, allowing users to interactively generate XYZ and RGB files from 2D or 3D seismic data that might be stored in different versions of the SEG-Y format. The output files can be fed into visualization tools for further display and interpretation. To verify the quality and validity of the images produced by this tool, a 3D Open Inventor viewer has been developed to dynamically display the slices parallel to the three main axes using a 2D texture mapping technique. The main feature of this tool is its capability to manipulate SEG-Y headers, essential to retrieve the requested data entries from the original data set. The tool is written in C++. Due to the excellent encapsulation and extension capabilities of C++, adding a new input or output format to the tool would be straightforward for possible future extension. In addition, the C++ classes developed for building interfaces using the X/Motif toolkit greatly simplify the coding structures in comparison with the original widget usage and enable easy reuse.