Convert PS(Post Sctipt) File In to Word Using Asp.Net

There is nothing in ASP.NET to work with PS. The Open Source product called PDFSharp and primarily used for PDF in .NET has a namespace PostScript, it should help you to parse a PS file and get the data you need:
http://pdfsharp.com/PDFsharp/[^].

To create a Word document, use Office interop assembly. Basically, in your project's "References" tab of the Code Explorer, click "Add Reference", use the tab "COM" of the "Add Reference" window, add the reference to Microsoft Word Object Library of required version. Please see:
http://msdn.microsoft.com/en-us/library/microsoft.office.interop.word%28v=office.11%29.aspx[^],
http://msdn.microsoft.com/en-us/library/microsoft.office.interop.word%28v=office.14%29.aspx[^].

(Or similar piece of documentation for required version.)

See also:
http://msdn.microsoft.com/en-us/library/aa192495%28v=office.11%29.aspx[^],
http://msdn.microsoft.com/en-us/office/hh128772.aspx[^].

—SA