Originally Posted by pip22
You can't modify the partition that has Windows installed on it because doing so would destroy your Windows installation.
You can modify the drive/partition with windows installed as long as you don't mave any windows files to another drive in the process -as a rule, keep all inmportant files in the C: drive.
Try using an alternate OS known as Parted Magic. To use it you will need a blank CD or DVD and a disk burner though. write the disk image to the disk and then reboot your PC from the disk. It may be able to edit your partitions.
Parted Magic - Free software downloads and software reviews - CNET Downloads
I have used it and it is a very user friendly layout.