Creating and manipulating graphics is really beyond the scope of these pages. I'll speak a little about using images over in the Workshops area. If you are interested in creating/manipulating images here is a short list of software:
Paint.NET
This program is free and is of the same level of expertise as the major
image editors such as Paintshop Pro and Adobe PhotoShop. Paint.Net features
layering, without which you cannot do professional graphics. Paint.Net
is basically image and photo manipulation software designed to be used
on computers that run on Windows
XP or 2000.
Paint
Shop Pro
The best graphics shareware ever! If you use (Windows) and want to
make custom graphics for your web pages, then this software has all you'll
need.
From JASC, Inc.
Adobe
Photoshop/ImageReady
What can I say? This is the best visual creation software there is. It comes
in both Windows and Mac versions, has a hefty price tag, and
demands mucho RAM and power. The Photoshop/ImageReady package can do more
than you'll ever need. You can download an
evaluation version too.
From Adobe Systems Incorporated.
Macromedia
Fireworks
Fireworks is the only web graphic design software you need! Fireworks' suite
of text, design, illustration, image editing, URL, JavaScript, and animation
tools can create everything for your web site, without jumping from application
to application. Designers can optimize and preview final output in every
popular format. You can download a
fully functional 30 day trail version.
From Macromedia, Incorporated.