The errors (Actually a Warnings) are:

WARNING Unable to open INCLUDE file DT_INTS-18.BAS
WARNING Unable to open INCLUDE file REENTERPBP-18.BAS

Those INCLUDES are in the PBP root directory (along with all other INCLUDES that work, every time, all the time).
The spelling and format on those two INCLUDES is correct (checked, and reloaded, several times).
Any other PBP program I have ever used on this computer , compile, program, and work 100%

Actually this thread should probably be closed - I am not all that concerned about THIS problem on THAT computer. It is only used for convenience, since it will open and work with Mr E's MultiCalc. I asked this question more out of curiosity than anything else.
Thanks to all that responded.

All my other "Lab Computers" are XP's and I will keep them that way. They are not used for Web browsing, only for program development and debugging. I'm 100% satisfied with them, and see no reason to upgrade them.