Is there a preference to open files at 100% in Photoshop (CS3)?

All of the files you open in Photoshop are automatically resized so that you can see the entire image in the current window. This usually means it’s reduced to 33.33%, etc. So every time I open a file I’m constantly forced to resize it back to 100% to start working.

Naturally this becomes very repetitive. Is there a preference workaround for this?

I’m running 10.5, Photoshop CS3