If the DAT file you're trying to open is text, you can convert ... program if it doesn't convert properly in Excel. Click "OK." Click "File" and click "Save As." Name your file and click "Save ...

convert your original document into an ASCII file using the source word processor. Look for Export in the File or Export menu. Select ASCII file or Text File. After creating an ASCII file of the ...

Fortunately, you can convert Excel files to plain text files, which can then be imported into almost any spreadsheet program, such as Intuit's QuickBooks accounting software. This process can be ...