QTP support for 64bit apps

Below is the information that is published in the HP support site about the 64-bit App and OS support :

64-bit application support
Using QuickTest Professional version 10.0 and below to test 64-bit applications is not supported. QuickTest Professional supports testing on applications based on Win32 API and MFC. QuickTest Professional version 11.0 supports test particular techonologies on 64-bit applications after installing patch QTP_00699.

64-bit operating system support
QuickTest Professional 10.0 and 11.0 supports:

• Windows XP 64-Bit Edition—Service Pack 2/Service Pack 3
• Windows Server 2003 64-Bit Edition—Service Pack 2
• Windows Server 2003 R2 64-Bit Edition
• Windows Vista 64-bit Edition—Service Pack 1
• Windows Server 2008 64-Bit Edition (*)
• Windows Server 2008 R2 Edition (*)
• Windows 7 64-Bit Edition (*)

Note(*): These environments require patches QTP_00626 and QTP_00644
For more information see Document ID KM744522 - QuickTest Professional 10.0 Product Availability Matrix and Document ID KM543959 - QuickTest Professional 10.0 Readme
QuickTest Professional 9.5 supports:

• Windows XP 64-Bit Edition—Service Pack 2
• Windows Server 2003 64-Bit Edition—Service Pack 2
• Windows Vista 64-bit Edition or Windows Vista 64-bit Edition—Service Pack 1
• Windows Server 2008 64-Bit Edition

Note: For more information see Document ID KM480579 - QuickTest Professional 9.5 Readme
QuickTest Professional 9.2:
QuickTest Professional 9.2 supports Windows XP 64-Bit Edition-Service Pack 1 and Windows 2003 64-Bit Edition. Note: For more information see Document ID KM18464 - QuickTest Professional 9.2 Readme
QuickTest Professional 9.0/9.1 supports:
QuickTest Professional 9.0/9.1 supports Windows XP 64-Bit Edition-Service Pack 1, Windows Server 2003 32-Bit Edition-Service Pack 1, or Windows Server 2003 R2 (32-Bit x86). Windows 2003 server 64-bit is not supported.
QuickTest Professional 8.2 (and below):
QuickTest Professional 8.2 (and below) does not support 64-bit operating systems. 

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HP releases patch (QTP_00699) to support 64-bit Applications in Windows 7

Download : http://support.openview.hp.com/downloadAPatch.jsp?patchName=QTP_00699.EXE&prodName=qtp&prodRelease=11.00

Installation instructions

Please review all instructions and the Hewlett-Packard 
SupportLine User Guide or your Hewlett-Packard support terms
and conditions for precautions, scope of license, 
restrictions, and, limitation of liability and warranties,
before installing this patch.
------------------------------------------------------------
1. Back up your system before installing a patch.

2. Execute the patch:

        QTP_00699.EXE

During the installation, if you select to save the original
files, those files will be copied to the directory
\Patches\QTP_00699\orig
e.g. "C:\OpenView\Patches\QTP_00699\orig"