Microsoft Office 2003 "Save as" dialogue box issue

I have a Windows issue (happening on Win XP, Vista and 7), that when I try saving a document, normally the Save dialogue box appears and "Save as type: " would normally show the file extension. Instead, now it's only listing "All Files (*.*)" and adding the file extenison to the "File name: " box just above.
I have also checked / unchecked the "Hide extensions for known file types" in the "Folder Options", both settings not changing anything to the Save box.
Had anyone come across this issue, and how can I once again have the File extentions in the 'drop down' list instead of just "All Files"?
Thank you for any help.
John

I can't say much, but it sounds like a registry error to me. If you have a registry cleaner, I would run it. Along with that, I would run sfc /scannow, and if that didn't help, then run chkdsk /r. None of these are necessarily a specific cure, but when in the dark, use a shotgun.

Thanks for the quick replies. I'm trying to save an attachment from Office 2003 (it could be anything, please see attachment). Maybe I should try posting in the Office section...

Thanks.

Quick check in other apps...definitely Office related.