> noted that our application is running on WoW (windows-on-windows) compatibility-mode using 32-bit DLLs.

Just like Visual Studio.NET 2008 and Microsoft Office 2007... Doesn't sound like that a bad company to me.

64 bit isn't the holy grail either. Right now it's causing us a bit of support issues, because a number of .NET apps are compiled as "any cpu" which runs in 64 bit mode on a 64 bit machine, but at the same time rely on external 32 bit DLLs. Obviously, the application causes an error... not. The developers were so smart to hide the 32 bit calls in a try catch block ignoring the exceptions. The application simply does nothing.