Yes I was looking in the wrong path. Now i got the exe. Any how i would like to mention the steps i did as it may help some one else.
1)Get the Visual Studio 64 bit components installed in you machine
2)Select menu Build->Configuration Manager
In the dialog displayed in the Active solution platform
combo box select X64 if it is available[it will be available only if you have already created it]. If it is not there in the list select new from the combo and in the New solution platform
dialog displayed in the type or select new platform
select a 64 bit platform (X64 in my case) . You can choose form which platform you want to copy the settings for the new platform.
3)Now for your project select the 64 bit platform created and build your application. Make sure that the out put path is set properly
(Project property pages->Configuration properties->General->Out put Directory)
4)If you are upgrading you 32 bit application to a 64 bit application you may end up in having having many liner & compilation error.
The dependencies of you project also should be in 64 bit version.
Make sure that you have mentioned all the paths to the appropriate folders. In the Tools ->Options->Project and solutions VC++ directories
, in platform combo box select the new platform created and make sure that all the paths are mentioned properly in it.
And also make sure that in project properties if there are any additional dependencies or additional include directories specified make sure that they are proper.
For windows message handlers you may get compiler errors as the signature for them will have to be changed according to the new signature for them in VC++.