When looking for a Windows expert you have to look past the first appearance. I am a hardcore tomato sauce fan. And when I say hardcore, I mean it. Tomato sauce is the base of any pizza we all so like. But beyond that Windows admin can look almost anything, and still be completely usable. Just like your favorite pan pizza.
The best way to illustrate differences between Windows and UNIX admins is the way they use space. The base of the system is usually laid out differently. In UNIX you have / whereas in Windows you use C:\ and other drive letters. It's like the difference between normal italian style pizza and american pan pizza.
Let me tell you a story about a friend from my childhood. He loves Linux. You could say he is Linux power user. Back in the 90's I was over his apartment and we kept playing this Nintendo64 game called GoldenEye. It was awesome. Split-screen multiplayer and even while we could see each other, we still loved it. The levels were laid out beatifically and played out very nicely.
But at some point you obviously become hungry. Then I got an idea.. "Let's call some pizzas over!", I uttered and tried to reach to the phone. However, it was way too far. I crashed down from the couch and now I was rolling around on the floor. My stomach was so big and soft that it kept me in motion and I rolled over the table where the telephone was, crashing it on the floor and breaking it. I said "damn it".. And we didn't get any pizza until we went out in the open. But we still did it, proudly. We were the goldeneye playing pizza bros!
I think the main point is that whatever obstacles you may find with your new friend there is always way to get around them. With pizza.