To be a bit more precise, you should read the 'mount' man page, especially the part "Mount options for fat".
I have done this once, and used something like: (in mount options column in fstab, see man fstab
This should give al files in the windows partitions the permissions 555, (see man umask) which means everybody may execute and read the files. Execute is important, since dirs should be executable to ask for its contents!
The gid-thing means the group whith number 10 (normally wheel) are the group owners of al files, and since anybody including group may execute the files, users which are a memeber of wheel may execute them. But notice this isn't important, since the permission becomes 555, which means EVERYBODY may execute and read the files. Change the values of gid and umask to you're needs, and instead of gid=010 you could use uid=100, where uid, in this case 100, is you're user-id number.
You can find group and user-id numbers respectively in /etc/groups and /etc/passwd.