You can open the file by downloading a different word processor, 'open word' by going to www.openoffice.org and downloading Open Office. After the download is complete, open 'writer' and locate your .asd file, that should do it!
The Open Document Format for Office Applications (also known as OpenDocument or ODF) is an XML-based file format for representing electronic documents such as spreadsheets, charts, presentations and...
Several problems I have with my word files. For luck I after some efforts I overcame my trouble with the aid of one utility, which might relieve in such situation.