[newbie] Why can't non-root user save to DOS partion?

[Chuck]

When I'm logged in as root, I can save files to my Win98 partions without
problem. But when logged in as a user, I can't save a dang thing. 

In DrakConf - User accounts, I've granted privileges for every category I can
see but always get something like "error opening /mnt/DOS_hdd5/xxxx.html:
Permission denied". I'm sure it's something simple but what?