Specs: Windows 7

Is there any program or Windows utility that you know of that does this?

I WOULD LIKE to see what device in my network is USING what IP address.You could try ARP.

C:\Users\Me>where arp
C:\Windows\System32\ARP.EXE

C:\Users\Me>arp -a

Interface: 192.168.0.3 --- 0x3
  Internet Address      Physical Address      Type
  192.168.0.1           50-6a-03-41-d4-43     dynamic
  192.168.0.2           00-10-75-2f-da-44     dynamic
  192.168.0.5           00-21-70-82-6a-ea     dynamic
  192.168.0.8           fc-b4-e6-92-d2-a1     dynamic
  192.168.0.9           00-0c-29-2c-77-56     dynamic
  192.168.0.15          68-94-23-d3-c3-16     dynamic
  192.168.0.255         ff-ff-ff-ff-ff-ff     static
  224.0.0.22            01-00-5e-00-00-16     static
  224.0.0.251           01-00-5e-00-00-fb     static
  224.0.0.252           01-00-5e-00-00-fc     static
  224.0.0.253           01-00-5e-00-00-fd     static
  239.255.255.250       01-00-5e-7f-ff-fa     static
  255.255.255.255       ff-ff-ff-ff-ff-ff     static