OK, did some lookaround for the problem.
I have also commented in ReEnterPBP.bas the following
Code:
 '   T3_Save     VAR WORD
 '   T4_Save     VAR WORD
Now it seems that I am quiet near but one warning message is there still :
Code:
Executing: ........"TxRx.bas"
PICBASIC PRO(TM) Compiler 2.50b, (c) 1998, 2008 microEngineering Labs, Inc.
All Rights Reserved. 
Warning[206] D:\BACKUP.........TXRX.ASM 752 : Found call to macro in column 1. (INT_CREATE)
Loaded D:\Backup..................TxRx.COD.
BUILD SUCCEEDED: Thu Dec 31 16:39:22 2009
Any advise if I should be bothered about the warning message?