If you are using Microsoft Visual Studio 2005* or 2008 and will be developing 64-bit applications (for the Intel® 64 or IA-64 architectures) you may need to change the configuration of Visual Studio to add 64-bit support.
"If you do not have 64-bit support you may receive an error message such as: Build fails with message: Intel Visual Fortran Compiler for x64 not installed. Tools, options Intel Fortran, Compilers has no entry for x64."
If you are using Visual Studio 2005/2008 Standard Edition or Visual Studio 2008 Shell, no configuration is needed to build Intel® 64 architecture applications. For other editions:
•1. From Control Panel > Add or Remove Programs, select "Microsoft Visual Studio 2005" (or 2008) > Change/Remove. The Visual Studio Maintenance Mode window will appear. Click Next.
•2. Click Add or Remove Features
•3. Under "Select features to install", expand Language Tools > Visual C++
•4. If the box "X64 Compiler and Tools" is not checked, check it, then click Update. If the box is already checked, click Cancel.
To use Microsoft Visual Studio 2005/2008 Team System Edition to build applications to run on IA-64 architecture systems, follow the above steps and ensure that the box "Itanium Compiler and Tools" is checked.
To build a 64-bit program using Visual Studio, create a 64-bit project using the steps in this article.