The XLS and XLSX file associations are broken for Office 2010. When I try and fix them via either "OPEN WITH" or through properties EXCEL does not show up on the default program list. If I browse to the exe file in c:\program files\microsoft office\office14\excel.exe it does not associate the file with this exe file. I have seen some references to a problem like this in the BETA version but this is the retail released version.
OS - Vista Business SP2
Running on MacBook Pro via Parallels V5.
I just upgraded to Office 2010, and the XLSX association was working (I broke that one) but the XLS association never worked. I usually know how to fix file associations but something is different about Office 2010 and this has me stumped.