CHM error

I download a help file EDIdEvHelp.chm from http://edidev.com/. (within evaluate framework EDI)
Once I open a sample file it displays a unreadable characters.
Is someone know how to fix it? (I copied it as below)
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Dim oEdiDoc As Fredi.ediDocument
Dim oSchema As Fredi.ediSchema
Dim oSchemas As Fredi.ediSchemas

Dim oInterchange As Fredi.ediInterchange
Dim oGroup As Fredi.ediGroup
Dim oTransactionset As Fredi.ediTransactionSet
Dim oSegment As Fredi.ediDataSegment

'CREATES OEDIDOC OBJECT
Set oEdiDoc = New Fredi.ediDocument

'THIS MAKES CERTAIN THAT FREDI ONLY USES THE SEF FILE PROVIDED, AND THAT IT DOES
'NOT USE ITS BUILT-IN STANDARD REFERENCE TABLE TO GENERATE THE EDI FILE.
Set oSchemas = oEdiDoc.GetSchemas
oSchemas.EnableStandardReference = False

'ENABLES FORWARD WRITE, AND INCREASES BUFFER I/O TO IMPROVE PERFORMANCE
oEdiDoc.CursorType = Cursor_ForwardWrite
oEdiDoc.Property(Property_DocumentBufferIO) = 200

'SET TERMINATORS
oEdiDoc.SegmentTerminator = "背罕褒"
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