Assuming you made the Windows 7 partition in the middle, as it has the Boot files so it should be Windows 7.
The XP if D: is set Active as it should be since it holds the MBR.
If I am assuming incorrectly, and Windows 7 is now D: and XP:C then something has caused the boot config to be incorrect.
I notice the OEM partition sitting on the lower address is empty. I would delete and recover it into C using free Partition Wizard CD
, then run Startup Repair 3 times to recover Windows 7's boot.
After restarting Windows 7, keep the DVD in the drive and run a Repair install to correctly reconfigure the Dual Boot which is what Windows 7 does when not interfered with - probably by that OEM partition sitting on the boot sector.