Opening TIF's and PSD's

[wapiti]

Suddenly, my tif and psd files will not open directly in CS5, but rather in Windows Live Mail[default] and Windows Live Photo, whatever these are.
I can still go through Camera Raw to open in CS5, but this is somewhat of a pain.
Up until recently, I had no problem going directly into CS5 from Bridge with Tif's and PSD's.
Any ideas on how to correct this?
No problem opening NEF's.

[Kalrog]

This is usually just an OS setting thing. There is a control panel section that will do it - but for the life of me I can't remember what that is.

My best suggestion is to right click on a tiff file, select "open with", select your app (CS5 in this case), check the box that makes that app the default, and hit ok.

[mdparthum]

Can't you go into "Tools", then "Folder Options" and click on "File Types" and change the way the file is opened?