It seems to be automatic, no special steps needed.

To access shared Windows folders with OS2007 I had to install Wizard Mounter. Run Wizard Mounter to mount a specific Remote File System directory, specifying the computer (by IP address), the shared directory name to mount, and the access type Samba. It then appears in the N800 File Manager under Remote File Systems.

In OS2008, no steps needed. The first time I opened File Manager after installing OS2008, there were my Windows shared network folders shown by name of computer.