Re: How to share files between two ubuntu computers
Install the system-config-samba package. This adds a "Samba" menu item to System > Administration.
Create a new user account on your Ubuntu system that has the same username and password as your Windows system, and then go into System > Administration > Samba and create it as a new Samba user. Tell it what folders you want to share and what users can access it.
Reboot the Windows client and your new share will be available in the usual place.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.