if you are going to do that, then you may as well use knoppix, zipslack or tomsrtbt for the bootdisk, especially if you want to use fdisk, since the fdisk on those systems is far superior to the one on the windows bootdisks.
however those bootdisks aren't going to help you use NTFS, and bootdisk.com claims to have an NTFS capable bootdisk there, shame you can't get the NTFS access and the good fdisk on one bootdisk.