well, in case u can't get back into windows, get online and go to
http://linux-ntfs.sourceforge.net/info/redhat.html#down and download an rpm for ntfs reading for your kernel version (u can find your kernel version by type uname -r in a terminal)
after downloading it, cd into the directory where u put the file and do rpm -ivh blabla.rpm
u should see a bunch of #### and 2 100%'s meaning it installed successfully
then mount your ntfs partitions like so:
make some mnt directories with these separate commands: mkdir /mnt/hda5
mkdir /mnt/hda6
mkdir /mnt/hdc5
mount /dev/hda5 /mnt/hda5
mount /dev/hda6 /mnt/hda6
mount /dev/hdc5 /mnt/hdc5
then u can browse those mount directories and get whatever u need out of your windows partitions, but them on a disk or cd and then u should be able to safely do whatever u need to do with windows (including wiping it)
also, u have a fat32 partition, mount that like so (if there is anything u need from it)
mkdir /mnt/hdc1
mount /dev/hdc1 /mnt/hdc1
also, is the windows partitions primary or logical partition because from what i see it must be logical and windows usually doesn't boot from logical partitions
edit: yes, do as the above post says, that should solve the problem (and prove that windows can boot from logical partitions)