Vista - Set Association not Updating for Word 2007

I just installed office 2007. Previosly had 2003..

I went into "set associations" to update the program used to open "Doc" and "docx" however it would not update for "winword". Following was the path I used on "browse"

Path: programfiles/microsoft office/office12/winword. I hit open. The "set associations" window did not update for this application.. As a test... I selected excel in the office 12 folder and that DID update to set associations. Should I be looking for a "winword.exe" folder.... I did not find one in office 12.

In addition when I try to open a newly created office document it cannot find a program to open and I go through the same "browse" procedure and nothing is updated. How can I get Microsoft office 2007 into "set Associations " as the default program to open .doc and docx. It is listed as "set Associations" for several other extensions.

Thank you

I now have all my .doc and .docx files which I cannot open.