SSIS Script task: FileNotFoundException: Could not load file or assembly While refering to third party DLL

While referring to a third party DLL in the SSIS Script task we encountered following error:

Error: System.Reflection.TargetInvocationException: Exception has been thrown by the target
of an invocation. ---> System.IO.FileNotFoundException: Could not load file or assembly
'xyzzz, Version=5.3.0.26835, Culture=neutral, PublicKeyToken=5b5f377bc08a4d32' or one
of its dependencies. The system cannot find the file specified.
File name: 'xyzzz, Version=5.3.0.26835, Culture=neutral,
PublicKeyToken=5b5f377bc08a4d32'
at ST_d83cb23ff54e47979cb61222ad9d6b85.csproj.ScriptMain.CreatePdf(String pstrFileName,
String pstrHtml)
at ST_d83cb23ff54e47979cb61222ad9d6b85.csproj.ScriptMain.GeneratePdf(DataSet pobjDs)
at ST_d83cb23ff54e47979cb61222ad9d6b85.csproj.ScriptMain.Main()

Solution: Both the solutions specified work fine. Either of them can be refereed.

Solution 1: Place the xyzzz.DLL to location "C:\Windows\assembly" (this is where the GAC
will place all the files). The file gets INSTALLED there and you need to UNINSTALL to remove it.

Solution 2 (for 32 bit processor): Place the xyzzz.DLL to location "C:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn"

Solution 2 (for 64 bit processor): Place the xyzzz.DLL to location "c:\Program Files\Microsoft SQL Server\100\DTS\Binn\"

Hope it Helps :)

Feel free to suggest a better option.