Is a Pentium 4 a Dual core?

I bought a PC from a local computer store last year and told him all my specs. I needed it for video editing. Here is what he listed as been sold to me.

Pentium Dual Core @ 3.0 Ghz

Now when I use Intel's Processor Identification Utility it comes up as a:

Intel Pentium 4 CPU 631 3.00 Ghz  and only shows one Core.

Is that processor considered a Dual Core or is it a single core? I want to know if I have a leg to stand on.

Thanks in advance for any help...