I installed fedora (version 17 beta) some time ago, but I don't like it. I'd like to replace it with ubuntu 13.10 and keep my Windows 7 untouched. I use GRUB to boot. My computer is 64-bit. I don't have the windows installation cd.

During ubuntu installation I don't know what to do with fedora partitions.
Can I delete them in windows? Won't that also delete grub? Will I be able to boot normally after that?
[partition view in windows](https://dl.dropboxusercontent.com/u/79065269/fedora.jpg)