If you open them by other viewer (like Smart FaxSee, faxsee pro), or convert them to tiff or pdf files by format conversion tools (like Batch WinFax2PDF, Batch
You need AWD patch to open view convert MS awd fax on Win NT/2000/XP/2003/Vista, along with Smart FaxSee, faxsee pro, Batch Fax to PDF, Batch Fax2Tif, Batch Fax...