On 26 May 2000, at 14:56, Dale Botkin wrote: Dale, Just grasping a bit at straws...but the "//" end of line comment is not always supported for C compilers (I think it's standard in C++, but not in C). You might try changing the #define LCP. Instead of #define LCP 0xC021 // Link Configure Protocol packet Use #define LCP 0xC021 /* Link Configure Protocol packet */ Hope this does it... -Rich