The problem that you are having is that Visual Studio Express is not picking up the ps2000a.lib file - you can search for the LNK error codes on the MSDN website i.e.
In Visual Studio Express, click Project, then click the option for the Project Properties. Click on the Linker item under Configuration Properties then in the Additional Library Directories, set the directory path to where the lib file is.
You may need to add the lib name to the 'Additional Dependencies' item in the Linker -> Input sub-item.
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Hope this helps.