[Samba] access denied trying to access files on samba

[Daneev Roy]

Hi, 

I'm pretty new to Samba. I'm using Fedora with Samba. Im trying to create
different windows clients to access their particular folders and add or save
files for back-up purposes. I got it running and all client machines can see
the Samba server and can access the shared folders. The problem is, I cant
seem to upload any file in the folders. it keeps giving me error "access is
denied". 
i've allowed the users read/write access in samba but still cant seem to add
files. What could cause this? pls help..... thanx in advance... 

Rgds.