Mounting partitions in Gentoo

I've spent a considerable amount of time in the last few days trying to upgrade the kernel on my Gentoo laptop. I had most trouble getting the NVidia drivers working again, but I think that was mostly because I was trying to use the nv framebuffer driver with the nvidia XOrg driver - anyway, I've now got it all working on a 2.6.12 kernel. The last problem I had was being able to see my windows partion (mounted at /mnt/windows) when logged in as any user - I must have been experiencing this for a long time and not noticed! The answer was in the page linked to above - add a 'umask=0222' option in the relevant line in /etc/fstab and now everything works.