Ubuntu 12.04 install doesn't detect win 7 for dual boot :(

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http://askubuntu.com – I've used linux in the past and really want to install it on my current computer alongside my current OS, Win 7 64-bit. However when I try(various methods) from the 12.04 liveCD, it can't seem to detect my Win 7 installation; worse than that when I try to opt for the advanced/custom option instead of 'erase entire drive and install ubuntu' it doesn't detect my hard drive there. Ubuntu knows the hard drive is there though, because I can open its partitions through the file explorer etc and they automount. GParted knows it's there too, and sees the partitions correctly(though it reports some so (HowTos)