This is quite correct. I currently use StrataVision 3d 5.0, although some of the Frozen Heart Graphics (Hunter Killer, Asteroids) were made in Extreme 3d, and most of the ones actually in the game were made in the free StrataVision 4.0. A few of the Femme Fatale graphics were made in Pixels 3d (free version) and rendered in StrataVision. Almost all of the scenes were made in Bryce 2.0 (in fact, most of them were made in the DEMO version, using SnapzPro to capture them before the DEMO message came up). The people were made in Poser 1.0 (free with a magazine) and 3.0 (paid for upgrade)
I'm now using Bryce 4 (bought), Poser 4.0 (given to me, because I was a Beta tester), StrataVision 5.0 (because I still like it) and, of course, Photoshop.
If you mean how did I get the 3d spin effect (which, by the way, some people hate), it's just a question of animating your object to tilt as it goes. It's more of a trick than anything else. It usually takes me several tries before it looks like something I want.
By the way, I'm remaking a lot of the graphics right now, with better shapes and better textures for the ones I was never quite comfortable with (Scoutship, Bulk Freighter, Falcon, Icax, Buccanneer etc).
Hope this helps.
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M A R T I N T U R N E R