You most likely would need to start with the application that
uses the file format and try to import the Excel file. Excel does
not directly support .TRN files.
A translation support file (.TRN) is used by many applications,
including:
.trn - Quattro Pro
.trn - Clarion database
.trn - MKS Source Integrity project usage log
.trn - Translation file
.trn - Medlin Payroll Software related file
.trn - MegaHAL conversation simulator training file
.trn - NSME Trains screensaver file
.trn - Medlin Accounting current year transactions
.trn - Adobe PageMaker file
.trn - Payroll Mate 2008 current year transactions file
.trn - Microsoft SQL Server transaction backup file
.trn - STN Express transcript text file
.trn - TextBridge training data
.trn - VGA Planets game turn file
.trn - Nova Logic game mission terrain file
