I bought a new hard drive and installed Windows followed by Ubuntu 11.04 on it. In the screenshot below, Windows System, C:, swap are Primary partitions. I then put / and /home in an extended partition. I left about 150GB, which is highlighted, because I wanted to make it a D: later.

Windows will not let me format that volume, since I have already have 4 partitions.
Ubuntu Disk Utility is not recognizing it and I cannot create a partition from that allocated space either.

Is it possible to take that unallocated space, and put it under the "Extended partition" without extending any existing partitions? My aim is to have a partition formatted in NTFS/FAT32 that both Ubuntu and Windows can use.

I will reformat and reinstall if required but would like to know if there is a quicker way first.