Help with dual boot please!

Hi, I am having trouble trying to set up a dual boot system in that the other primary partition is not bootable! How do I make it bootable?

This is what I had BEFORE
Hard disk 0:
- WINDOWS primary partition (active, ntfs, 15gb size) + extended logical ones

This is what I have AFTER:
Hard disk 0:
- OTHERPART primary partition (not active, hidden, fat32, 1.5Gb size)
- WINDOWS primary partition (active, ntfs, 15gb) + extended logical ones

So basically I used Acronis Disk Director Suite to shift all my old partitions along and created another primary hidden partition in front of the one where XP is installed.

Windows still boots fine but I don't know how to make the OTHERPART active and bootable. It's just a blank fat32 primary partition for now, hidden as well.

How can I make it a choice to boot that one or the windows one? How do I make the otherpart bootable?