As a consumer, I fully support the idea that companies (such as Apple) should impose a single way to do things. When I buy a product, I don't want to have to decide between multiple ways the interface can work, or whatever. That decision is work! I'm paying someone else to do that work for me. I'd much rather be told "This is how you use it" than "You can use it one of many ways, and change it around in Settings".
I believe the request could be phrased as "How do I open a new window to the same location as the current foreground window?".
One solution is, you do Show Path Bar (view menu), then hold Command and double click on the icon in the path bar that represents the current folder.
I was at WWDC the other year, and someone asked if the Apple Design Award (a cube thing which lights up when you touch it) had a removable battery. It turns out it takes 4 AAs or something. So they're not as completely against them as all that
Perian has two parts: the quicktime codec itself (which is removed as described above), and the Preference Pane that controls it.
To remove the latter, go to System Preferences, right click on the Perian icon, and choose Remove.
It's not possible. Sorry. The hardware is too different: even if you could find a PC with the correct generation of ARM processor, you'd need the exact same hardware an iPhone has. Which would end up just being an iPhone.
There is an iPhone simulator included with the SDK, which you can download for free. Maybe that's what you need?