Thinking to migrate to Vista X64(64 bit system) from XP 32 bit

[SUBMAN1]

Originally Posted by goldorak

Subman1, win32 applications on windows 64 (xp 64 or vista 64) are not emulated.
They run on top of the wow subsystem which takes care of converting the api 32 calls to api 64 calls. Nothing more, nothing less. So the impact on performance is very mild, its nothing like running the application on a virtual machine or having it emulated....

Read my post again. You are somewhat wrong. There must be a 'sandbox' because most 32-bit apps must be protected from additional memory available to the system or they will crash. Read up on it.

-S