I have a few 64-bit servers, so for those of you who are not running anything in 64-bit yet, there is great care that should be taken to ensure that you have the correct download and/or install packages for ALL software. While you can indeed run 32-bit software on a 64-bit system, it is recommended to use a 64-bit version is it is available.
That being said, not all software providers offer 64-bit versions of their applications. And of those that do, there are compatibility requirements to look at with existing software packages that may already be installed on your system.
However, once you get by all of those generalities, we come to the topic at hand... Where in the heck is the 64-bit version of the .Net Framework for version 3.5???
I easily found the 3.5 framework to install here:
.Net Framework, version 3.5 Download
Unfortunately, when you read though the download details, it offers no clues as to whether you are supposed to use this download for 32-bit or 64-bit Windows. The rule of thumb is, if it doesn't say, then it is for 32-bit.
Right when I was about to exhaust myself and resort to a post in the ASP.Net forums, I found a link explaining the 3.5 .Net framework in greater detail.
I was both happy and surprised to find out that the .Net 3.5 framework download file is used for both 32-bit AND 64-bit systems. So no you know too!