Melanie,
Thanks for your astute comments. Your suggestions are bringing me tantalizingly close to the solution to this problem.
I believe you have corrrectly identified that mpasmwin cannot be found because of a path anomaly. The fix you suggest works if the complilation process is started from the DOS prompt. However, I am actually trying to compile from within MPLAB IDE, and that produces the error message.
I not sure, but maybe Win98 autoexec.bat has something to do with this. I can see that correct path is on the last line of the autoexec.bat list. I think that line went in automatically when v2.46 was installed. I'm not savvy enough about autoexec manipulations to know what to try next.
Perhaps I should think about an upgrade to WindowsXP.
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