[Samba] Password protection

[Brian Ronk]

I have an open samba share right now that anyone can get to and 
read/write, I want to make it only readable so I don't get viruses 
trying to infect the machine (not like it would do anything anyway).  
What I want to do is set up a share that is writable so I can copy the 
files over to the readable directory.  Is there a way to set up a 
password on the read/write so that I can access it easily?  Also, if 
this is possible, does it require a login to do so, or can I just supply a 
password?
Thanks

Brian Ronk