As a programmer, what do I need to worry about when moving to 64-bit windows?

Question

Most of my recent programming has been on 32-bit Windows using C/C++/C#/VB6 . Lately, my customers are asking if my code will run on 64-bit Windows.

I\'m wondering w

Answer 1

It might be easier to migrate .NET code if you have 100% "type safe managed code". You can just copy it to the 64-bit platform and run it successfully under the 64-bit CLR. Check this MSDN link on migrating 32-bit Managed code to 64-bit.

Btw, hanselman blogged about the topic recently.