Thanks guys, most useful. The other thing I was trying to explain about seeing size etc was when you used to mouse over pics in windows folders it gave you info of that, but on here it's just shows the name which is already viewable under the pic before you mouse over... if that makes sense!
I don't know how important that particular functionality is for you, but unfortunately I don't see a way to do it exactly the same as it's done in Windows.
In Finder (assuming you have Snow Leopard), you can view a folder in 4 different ways, each with their own set of "View Options". Use all 4 by clicking their corresponding icons at the top of the finder window.
Icon View is what you seem to be using at the moment. This view mode allows you to see the files as icons. You can make them large enough to easily see what each file is by looking at it (Similar to Windows' Thumbnail view). In the case of pictures, it will show the picture. You can edit the background in this mode to be any picture or color you wish, and the file info displayed is only the name, extension, and picture dimensions.
List View is better for showing as much info as possible. You can edit which columns to show, and each column can be clicked on to sort in Ascending or Descending order. The most common columns are: Name, Date Modified, Size, and Kind.
Column View is better for browsing directories and organizing files. The first column is the first file or folder you select from Finder. From there, new folders' contents are displayed in the next column over. If you select a single file, such as a picture, the next column over will show a preview, the name, the size, when it was created, when it was modified, when it was last opened, and for pictures, the dimensions. Under all of that, the "More Info" button opens the "Get Info" window for that file.
Coverflow View This is basically List View, but with icons in an iTunes-like coverflow at the top. Should you view videos in this view, you can actually click "play" on the preview and watch it in coverflow.
Edit Another cool thing about Snow Leopard is
Quick Look
With Quick Look turned on, I can view a folder full of pictures in List View to see all their info, and each one I click on is instantly previewed by Quick Look. The window can be made any size and moved any place on the screen. It will display text files, pictures, and even play videos automatically as you click on them.
