Overall, it sounds like you’re on the right track for performing a V2V conversion from a VMware VM (.vmdk file) to a Hyper-V VM (.vhd file). I did a quick web search, and the following links should provide you with the step-by-step information you need:
Basically, you need to use the “Convert virtual machine” feature in the Library section of SCVMM. You’re not importing the VM directly. Instead, you need to convert the virtual hard disks, and then create a new Hyper-V VM that uses the new VHD. It’s also possible to treat a running VMware VM as a physical machine and to use a P2V conversion process, but if downtime isn’t an issue, I think the above approach is preferred.
I hope this is helpful – good luck!