It's pretty easy to do it yourself (on the iBook it was very difficult, but no problem with the MacBook).

I recommend Seagate drives, a little more expensive but much more reliable than that Western Digital crap.

Depending on the model, if you get a much higher-capacity drive you could increase the heat output of your MacBook.

Click on any window in the Finder which is not currently in the front, and it should refresh files in all the windows.

If you Get Info on a sufficiently large number of files at the same time (highlight them all and choose Get Info), then you get a single window where you can set things like Locked status on all of them at once.

That's strange. On my computer it has to be more than 10 - if you select 10 files, you get 10 separate get info windows. If you select 11 files, you get one window. Using OSX 10.4.10.

Sure, just right-click the file, choose "Open with" and select any available application, maybe Preview? Or drag the icon on top of an application.

Just don't move the files in iPhoto's directory around, or it will get confused.

Other than games, there are programs that do the same thing as whatever you were using before. Normally better than the Windows counterparts.

You can install bootcamp for gaming if you want, though for me the joy of the Mac is that it's a great machine for getting work done productively; being a glorified video game console is more Windows' strength.