On a related note, I have been building VTK with Borland C++ Builder 6 (BCB6) and would like to add #if defined(__BORLANDC__) && (__BORLANDC__>=0x0560) #include <stdlib.h> #endif to DICOMFile.h so that atof and atol are found and my build (Hyoid) does not crash. If there are no objections I will commit later today. Dean