Hi Adriann, Thanks for your suggestions. I downloaded and installed the binary package of the gpc pascal compiler yesterday. It seemed to install easily and without problem. When I type "gpc" I get the expected output: "Reading specs from /Developer/Pascal/gpc321d3/lib/gcc-lib/powerpc-apple-darwin6.3/3.2.1/ specs Configured with: ../gpc-3.2.1/configure --enable-languages=pascal,c --prefix=/Developer/Pascal/gpc321d3 Thread model: single gpc version 20021128, based on gcc-3.2.1" But when I try to compile a program, I get the following errors, even for these two demo programs included with the package: [bluejay:~] ed% gpc factorial.pas factorial.pas:31: module/unit interface `Gpc' could not be imported [bluejay:~] ed% gpc datetimedemo.pas gpc: installation problem, cannot exec `as': No such file or directory I cannot locate the file "as" anywhere. What is wrong? Did I do something incorrect in the installation? I would appreciate any assistance you could give me on this matter. Sincerely Ed Stoeffhaas