Installing OS X Snow leopard on Windows using Oracle VM VirtualBox (Attempt 1)
Ok, I’d thought I’d try this purly out of curiosity to have OS X (a-la Hackintosh) on my Windows 7 PC using Virtual Box, rather than dual booting it. Anyway, after adapting the instructions for building a hackintosh in 8 steps I’ve got this far…

…failed…back to the drawing board!
I realised what the problem was – I’d used a iMac installation DVD rather than a ‘normal’ snow leopard disk. Using a Snow Leopard CD worked fine!
The clever guys over at windowsvistaclub have found a way to get the new and improved calculator for windows 7 to run in Windows Vista!
Good news is that the new Windows 7 Calculator works on Windows Vista too, if it’s been ported or migrated to Windows Vista.
Windows Vista users who want to use the more advanced Calculator program from Windows 7 can download the following RAR archive which consists of calc.exe with its mui language file extracted from Windows 7 pre-beta build 6801.
To Run Windows 7 Calculator :
1. Simply unpack the content to another folder
2. Run the calc.exe to use the Windows 7 Calculator in Windows Vista.
To replace existing default Calculator program in Windows Vista :
1. Copy calc.exe to WindowsSystem32, and calc.exe.mui (in en-US folder) to WindowsSystem32en-US folder
Overwriting existing file (you may want to backup the old Calculator binaries first in case of error running Windows 7 version). Voila, now the new Windows 7 Calculator has been installed on Windows Vista.
Download the Windows 7 Calculator for Vista
Rafael on his blog posted a nice little tool to unlock some hidden features of windows 7:

Windows 7 Blue Badge Tool
Last week, I revealed a weird protection scheme around some unfinished features in Windows 7 (build 6801). I provided a buggy tool to enable the new Taskbar, then teased everyone with other features such as gestures, panning, and Desktop Slideshow. It wasn’t intentional, I just needed some time to rework the unlocking tool.
Rivera’s tool lets users access Windows 7′s new taskbar a feature that looks pretty similar to Mac
as well as other unfinished bits of the operating system, including multi-touch gestures and a dynamic desktop slideshow that pulls images from Web-based feeds.
Understanding the risks involved in patching core system files, you candownload a copy of the tool, either off digiwebbs, or off his orginal post
Download the files here:
32 bit
64 bit