I have a mediagate media player, which I connect to my mac to play movies and mp3's etc. I had it working in 10.4 like a champ but my 10.5 install broke it

I am not that tech savvy and I used to use sharepoints to do this through a gui in the system prefs. 10.5 broke that as well

I need to enable guest smb login on a 10.5 machine.

Can any one give me a step by step on how to alter my smb.conf (assume I know nothing) to allow guest login to a directory in 10.5?

Help, I'm desperate