Right-click (aka Control + click) a .jpg file > Open with > Other > choose your photo software > Always Open With (I think that's what it's called).
You'll have to do this for every file extension you want to open in your photo software by default (.png, .gif, etc.).
Hmmmm, I did exactly what you said and it worked as you said I opened a .jpg file and selected other - picasa - always
Then when I tried to open another picture / .jpg it opened with preview again - it didn't change the default. I have repeated those steps a number of times and it always defaults to Preview? - after doing those steps you wrote it should now open all .jpg files without having to select Picasa everytime right?
When I select other than a list comes up of files and it says either all applications or recommended application at the bottom in a box in the center and then I have tried it with all apps or recommended apps selecting Picasa and it still defaults to preview????
Okay I tried it the other way with the "get info" and I thought it was going to work because I selected Picasa and it asked me did I want to change all files to work with PREVIEW so even though I selected Picasa it asked did I want to change all to PREVIEW and I think the reason why is because in the picture below there it shows the picture opened with PREVIEW . I DON'T know if I'm explaining this right but the get info thing SHOULD work because I select other and picasa and I have it clearly there on the screen to change to picasa and then I select all and then it says are you SURE you want to change all .jpg to open with PREVIEW? It keeps saying PREVIEW even though I selected Picasa and open all? I don't get it?
Okay I went back and tried it with Kodak and it did the same thing - defaulted to Preview. So two more times using the GET INFO method I tried and the last time I selected Picasa and it said are you sure you want to open all .jpg files with Picasa and I said yes and it worked. But previously even though I selected Picasa it kept asking if I wanted to open ALL with Preview which was wrong and not how I set it but for some reason it worked correctly the last time I don't know why but I am glad that it did. Most of my pictures are .jpg but I will try to do this with other formats like GIF and see if I can get those changed and how it goes but for now I am going to bed. Thanks for the instructions they worked finally and I don't know why not earlier but I won't look a gift horse in the mouth?
Edited by kcsummer, 27 November 2011 - 05:46 AM.