Upgrading to PyDS 0.7 on Windows

Hi,
I've been using PyDS 0.6.3 (which btw, as I get more and more up to speed on it, increasingly rocks ;-).

I want to upgrade to 0.7. I installed 0.6.3 using the packaged windows installer from Luis. I run WinXP.

I am comfortable upgrading from source, but am wondering if you can provide some clues to help?

I believe there are three pyds-related folders locally:
- a PyDS folder under 'Program Files' that holds my data, the templates, tools, etc
- a PyDS folder in my python site-packages folder that holds core PyDS code
- some PyDS scripts in my python scripts folder for startup, shutdown

I have read the Install from Source directions at the PyDS blog and the Win32 install clues at http://www.pycs.net/users/0000077/stories/1.html. I do not see any help specific to upgrading existing installs.

Does something like the following sound right?
1. unpack the 0.7 tarball into a temp pyds-0.7 dir
2. run setup.py install there - this is the step whose results I am unsure of...where will it put things? I don't think it knows about my 'Program Files\PyDS' folder...
3. manually overlay results of step 2 onto my existing 0.6.3 folders

Also, does 0.7 require upgrades to any of the underlying dependencies (e.g., mk4py?) I assume I would need to do those too - how can I easily identify what these are?

I want to be sure I don't accidentally stomp on any of my existing configuration, template customizations, data, etc.

Any guidance greatly appreciated,
Thanks,
Rand