My 64-Bit version of Adobe Photoshop CS5.1 takes up about 418MB on my HD.
This depends on your question....as it is not clear enough. Photoshop documents apply to Adobe Photoshop. Photoshop uses many different file formats but the most common file is called a "PSD", which stands for Photoshop Document. There is also PSB which is an extended larger version of PSD files and it stands for Photoshop Big.
You can. The icon in the toolbar is a big T.
Photoshop Elements is Photoshop but with less features, so Photoshop is better but it is professional level software. For home use or to get started Photoshop Elements is OK.
Photoshop 3.0
No, photoshop is not the law
what is photoshop?
Well Photoshop Elements is basically Photoshop, but that everything is already ready there. it's like easy version of Photoshop.
You can't. You need brushes photoshop 7 brushes for photoshop 7.0
By using photoshop of course
No Photoshop CS5 and Photoshop Elements are separate programs.
Adobe PhotoShop is an image editing application. You can get it from:http://www.adobe.com/products/photoshop/photoshop/there it costs $700 USD.
Yes, Photoshop can be downloaded online. Visit photoshop's official webpage for details on how to do this. Photoshop will cost several hundred dollars.