Long answer: Minimum specifications haven't been released, and this thread is on a one-way trip to lock'dville.
Bingo.
You're just going to have to wait for them to release the system specs, I'm saving up for a reel badass computer for gaming for the next 2 years or so. If I were you, I'd just save my money up and buy a really nice comp and not make Skyrim the benchmark for my graphics card, processor and RAM, I'd try and do that + 50% so it lasts quite a while.