accessing files on a windows machine - permissions for the windows user to open them

[Gryllida]

Hello. I store some files on a windows XP machine. The windows user
shared them with permission everyone full control. I'm on Ubuntu
10.04, and while being able to edit them all-right, when I make new
files, they have only me on the permissions list. resulting in the
windows user unable to open them... The files themselves are stored on
the other machine, not on this one , I get to it by smb://ip/. What
can I configure to fix it? Possibly to make the files I create inherit
the permissions of the directory I'm making them in?