I started my 64-bit experience by installing the 64-bit Windows Vista Ultimate OS. Let me tell you, the installation process, look and feel and everything of the OS is just like its 32-bit variant. No difference at all! So, don't expect to look at the desktop and figure out if it's a 64-bit or a 32-bit! The only way to figure that out is to check your system properties, which gives you the following screen... See at the bottom where it mentions, that this is a 64-bit Operating System

Fine, so I was done, installing the OS now; what was new? The very first question I had was, Do I strictly need 64-bit applications for installing & running them on a 64-bit OS? The answer is 'NO'! You can very much run your 32-bit apps. However, the device drivers need to be 64-bit compulsorily. All hardware devices need 64-bit drivers to work on a 64-bit version of Windows. So if you are running some old legacy devices (quite unlikely) first make sure that 64-bit OS specific drivers for the same are available! I got a nice error screen while I tried to install 32-bit display drivers for my GeForce 7600GS Video Card.
So, how does Windows allow you to install 32-bit apps on a 64-bit OS? The answer to this is WOW64! Now I know, Vista was majorly using this keyword 'WOW' in the Vista marketing campaigns and product promotions, but there is a lot of difference in both these WOW's :-D! The WOW that I am talking about stands for 'Windows 32-bit on Windows 64-bit (WOW64 or WOW)', a subsystem of the OS.
What's the big deal? I mean, I have a 64-bit OS, I'll install an application & expect it to run. What's with these numbers? What's with the difference in 64-bit & 32-bit? The issues are related to the 64-bit processors and Windows itself.
The processors run in two modes: 32-bit and 64-bit. In the 64-bit mode, the memory pointers are larger than in the 32-bit mode. While this gives the 64-bit applications access to more memory, the execution contexts and data are incompatible with 32-bit applications. As a result, 64-bit and 32-bit code cannot be mixed within a single process. For example, if a 64-bit process loads a 32-bit Dynamic Link Library (DLL), or vice versa, an error results, saying that the DLL format is incorrect. Consequently, 32-bit applications cannot use the 64-bit system DLLs. WOW64 solves these and other problems.
That's all that I know about WOW... and also one more thing... Wondered how the segregation of 32-bit and 64-bit applications is done by Windows OS while installing a new program/ application? Well Well Well, Vista makes a new folder, 'Program Files (x86)' & also just 'Program Files'. As the name suggests, 1 is for storing your 32-bit apps while the other one is for you 64-bit apps!
That's all I know about the 64-bit OS. If you have any questions or even extra information to share, please drop in a comment. I'll try to answer the questions, if I can & would be more than happy to learn more, from the extra info that you might have for me :-)



To connect your external device is very simple. Interestingly enough, the decoder comes with an optical wire, which helps you connect your PS2 in optical mode to the Decoder. Hell yeah! No more analogue signals for that sound you guys! And once you are connected via the Optical mode, the device does a little smart stuff for you! Like what? Well, these is this 'Dynamic Mode' which works only when you connect any device with Optical wire. Whats so special about 'Dynamic Mode'?

