static IP address for VMs

Hi, I'd like to reserve a static IP address for a VM that I made. Name of VM: DomainControl1, Virtual network name: Computation1, Cloud service DNS name: MatrixMultiplication2, Internal Ip addres which is made by azure: 10.0.0.4.

My questions are:

1- Can I reserve a static IP address from my desktop computer using Microsoft Azure Powershell?

When I run : Set-AzureStaticVNetIP

it ask me: IPAddress: which can be 10.0.0.6

but for VM: !? What should I write here? the help command is it should be <IpersistentVM> But I don't understand this type.

2- If I should reserve a static IP address by signing to VM, how can I download and install it in my VM?

Thanks