Go into TelnetCE Diagnostics, Alt D ->Scanner Diags, then scan your barcode. That will tell you what the scanner is seeing without a host system touching the data.
Hope that helps,
Personnaly , i dont use wordpad for the barcode creation.
Try this site or any barcode generator.: http://www.bcgen.com/linear-barcode-creator.html
Select a simple Symbology like 128 or another..
Print your barcode et try again.
In telnetCe Some symbology are not enbled by default ( I2Of5 for example )
Hope it's Help.