How to set the initial version number from 1.0 to 0.1

[vista]

When I add an aspect Versionable as a inbound rule in a space, when a file upload, the initial version number is 1.0
For me I want the file is uploaded with the initial version number 0.1, does anyone know how to configure it?

[jscl]

You can take a look at http://blogs.alfresco.com/wp/pmonks/2009/11/03/version-baselining/

[vista]

Thanks very much, you provide a good solution to thie issue.