The application to use on the VM is up to you, there are several pieces of software, depending on the OS you want to run on it. The outline is at least as followed, which you can use to implement it on the software you want to use.
The VM must have 2 NICs, both in Bridged mode and each to a different physical NIC (one wireless, one wired). Configure both interfaces as needed for the attached network. Configure the software you use to route traffic from the one to the other network, so two-way communication can be done.
On the workstation, set the default gateway to the VM, or add a route for the other network to go through the VM. The latter might be a better solution because of the resources on the network, like internet and all.
Now, I use a Linux host, so your route command will differ, but with the help output of the command alone (/?) you can find the right syntax for Windows.
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route add -net networkA subnetA dev eth0
This command will add a route to network A that goes through interface eth0. Replace "NetworkA" and "SubnetA" with the correct values of the network.