I agree with others: fat32 is a pain for DVD ISOs with its 4Gb limit. If you want to use it though check the umask entry in your fstab and also the privs of the directory to mount to itself e.g.:
/dev/hda3 /windows/C vfat users,gid=users,umask=0002,utf8=true 0 0
drwxrwxr-x 11 root users 8192 1970-01-01 01:00 C
For ext2/3 I have previously used explore2fs (GUI, no write to ext3 though) from Windows, and for Reiserfs rfstool (command line) and rfsgui (GUI). Gonna try that Ext2 IFS though. :-)
