Here is the script to open multiple files that I found on another posting.
Set Default Directory( "C:\Jan_24th\" );
files = Files In Directory( "C:\Jan_24th\" );
For( i = 1, i <= N Items( files ), i++,
If( Ends With( files[i], ".csv" ),
Open( files[i] );
Text Box( Regex( files[i], "(.+?)_", "\1" ) ) << journal; // All text before first "_" in file i's name is journaled
)
);