Photoshop problems!

When I open an image in Photoshop it appears slightly darker with a stronger color definition. If I save an image and open it in any other program it appears as normal - what I mean is if I for example copy an image from a website and open it in Photoshop and compare the two programs, the image in Photoshop is different. Then if I save the image in Photoshop as it is and open it in any other program it appears as it would on the website.

Why?? Is there any way of repairing this. It isn’t that big a deal, but if there’s an answer out there it would be appreciated.

Thanks.

I’m using Photoshop 7.0 by the way.