Mac help please!

[pixelstix]

I haven't scrapped in forever. A little while back I started trying to get back into it, then my computer died and my laptop that I had wouldn't run PSE very well. So now, finally I'm up and running... only now I'm on a Mac and have no clue how to do anything. I'm trying to get my scrap stuff moved over so that I can easily access it, but it's bugging me that the folder image doesn't automatically show up. I've read how to do it- to copy and paste the image into the info tab, but when I do that I get the generic "jpg" image instead. What am I doing wrong? I copied/pasted the preview jpg, the one called "folder".



And also, I'm still using the Chrome browser like I did on my PC, but for some reason when I try to do "image copy" and paste somewhere else, the paste doesn't work....

Thanks for any help you can offer!