3d shadowing to create depth

I am trying to create the look of depth and 3d and I assume it is done my using shadows.

What I am trying to achieve can be seen here

http://www.skyworksinc.com

If anyone can point me in the right direction I would appreciate it.

Thanks in advance

Keith

i'd say 95% of those grafx were done in photoshop and then imported into flash. well, that's mainly how pixelranger does his sites, as far as i know.

Wow i like their moving cloud thing