I got drawn in by PV3D and decided to give it a try from scratch. I’m recording the download and installation process here. A thought: there really isn’t much material on this out there.
- Install TortoiseSVN:
Go to the page http://tortoisesvn.net/downloads 
Download the appropriate TortoiseSVN and install it (a reboot is required).
What is SVN: SVN is short for Subversion, i.e. a version control system. Like CVS, SVN is cross-platform software that supports most common operating systems. As an open-source version control system, Subversion manages data that changes over time. That data lives in a central repository. The repository is much like an ordinary file server, except that it remembers every change made to files. That way you can restore files to an older version, or browse the history of changes. Subversion is a general-purpose system that can manage any type of file, including program source code. What is TortoiseSVN: it’s an SVN client — a Subversion client for Windows that plugs into Windows Explorer and the file management system as a Windows shell program.
Use TortoiseSVN to check out http://papervision3d.googlecode.com/svn/trunk/ into this folder (over 46M — the network speed, ugh, I’m losing it):
Create an empty folder (to hold the PV3D source code). I’m using one called pv3d. Right-click the folder - SVN Checkout
Enter the URL “ http://papervision3d.googlecode.com/svn/trunk/“, then click OK Wait a very, very, very, very, very, very, very long time…
Once everything is checked out, copy the three folders org, fl and com from branchesGreatWhitesrc in that folder and drop them into a folder dedicated to storing AS classes. I’m using the “AS3_Library” folder under my folder.
Open FLASH CS3, press CTRL+U to get to preferences, then in the ActionScript category click actionscript 3.0 settings next to Language and set the classpath
That way, from now on when you develop in FLASH cs3 you can import those classes.[Optional] Install the PV3D Flash components:
Go to http://code.google.com/p/papervision3d/downloads/list to download the latest extension (mxp file).
Use Adobe Extension Manager (download link: http://www.adobe.com/exchange/em\_download/ ) to install the extension
Open Flash and press ctrl+f7 — you’ll see that the components installed successfully.
