I'm looking for an SMB Server app for my HTC Hero (Android 2.1) so I can share the contents of my SD card and phone memory over the WiFi network like a regular Windows file share. I'd like one that does not require me to root my phone, and am willing to pay for the right app so it doesn't have to be free.

All I've found so far are:

1. SambaAndroid which requires root access.
2. androidsmb which is a "Java implementation of the SMB/CIFS network file and printer share server for Android devices" hosted on Google Code that has no documentation and has not released any files. (Can't post link as I'm a newbie here - please edit and link to code.google.com/p/androidsmb/)

Is it even technically possible to develop an SMB Server on Android that can be installed without root access?