Unallocated partition?

I've recently used Partition Magic 7.0 to make a new partition. Upon completion, I couldn't find any new partition created in My Computer. Then I opened PM7.0 to find out the the new partition created under C: is *.Unallocated.

How should I deal with this problem?

Hopefully its not seeing C as unallocated, if so then something isn't right, assuming C is where your OS is housed. Did it require a reboot to finish? If so did you reboot.

If nothing is wrong other than it being unallocated then all that means is you just need to create a partition there and format it. Easiest way to do this is through control panel -> admin tools -> computer management -> disk management in 2k/XP/2003/Vista