http://bugs.winehq.org/show_bug.cgi?id=10319
--- Comment #1 from Austin English austinenglish@gmail.com 2007-11-05 12:31:22 --- According to the AppDB, you need to install native DCOM98 to be able to open files: http://appdb.winehq.org/objectManager.php?sClass=version&iId=9008&iT...
Have you done so? If so, please retry with a clean .wine directory and see if the problem still occurs. You might try without native dcom, then with, as wine's OLE implementation may have improved enough for this to work, and it is conflicting with the native OLE you have installed.
If it still occurs, please run a regression test:
http://wiki.winehq.org/RegressionTesting