Issues partitioning/Installing Windows 8 on a MacBook

Hey forum! I know this is not really an Apple-related issue, but here's my situation. I have a MacBook with two partitions, one for Lion, one for Windows 7. I downloaded Windows 8 and attempted to partition my Hard Drive using Bootcamp, but it only gives me these options:

http://grab.by/cazw

Just in case you cannot see the image, here are the options:

- Create a Windows 7 Install disk (Which I cannot select)

- Download the latest Windows support software from Apple

- Remove Windows 7

My question is, how can I create another partition so I can install Windows 8? Can you do it from the Disk Utility app? I want to be able to actually have a quick peek to Windows 8 but for the life of me I can't go past this.