What should I know about developing for 64 bit applications?
<p>I am planning on getting a 64 bit os so I can see all 4 gigs of memory I have installed.</p>

<p>This raises a question: As a developer, what do I need to know when designing apps for 64 bit OS's? I read somewhere that data types such as int (I code in C#) can hold larger vales (probably due to bytes/bits etc).</p>

<p>Is there anywhere which explains how all this works (a little rusty on my fundamentals and maths I guess)?</p>

<p>Thanks</p>
