The _winreg api looks helpful; unfortunately, I'm trying to stick to what can be got from the cygwin install -- no _winreg. Simplicity of installation is quite important. (I'm using cygwin to get the xfree86 X-server, which is the whole point of this exercise)
I have found the cygwin command-line "regtool" for munging the registry, so I plan to use that via os.popen. Thanks all for pointing me to the right place in the registry! -- http://mail.python.org/mailman/listinfo/python-list