Yeah sure, but don't kill me if it goes wrong:
First of all try it incrementally. I.e start of just giving all other users read access
sudo chmod o+r <directory here>
The + means that the read access for other users is set. But it won't change any other settings
If this doesn't work, try giving write access as well
sudo chmod o+w <directory here>
It is unlikely that you will need to adjust execute (x) settings.
It would be easier to help if I knew what the settings were at the moment. You can get these by typing
ls -al <containing directory>
and note the information for the directory of interest which will look something like:
drwxr-xr-x 50 phoynak staff 1700 Jun 5 07:42 <directory>
The bit you are interested in is the drwxr-xr-x. The first letter d indicates it is a directory as opposed to a file. The next three letters specify Read Write eXecute access for the user, the next three for the group, the final three for others. It will be the last three that will be causing you the problem. I'm guessing it may not even have any access for others so that the last three letters appear as three dashes ---
Hope this helps a bit more
Si
go here for more info:
osxfaq