Something

[global]
   guest account = pcguest
   workgroup = MSHOME

;Increment 1: Free-to All directory: Scratchdisk
[scratchdisk]
   comment = Scratchdisk
   path = /scratch
   read only = no 
   public = yes


[homes]
comment = Home Directories
browsable = no
read only = no
create mode = 0750