MS word works perfectly at compile time but doesn't work after deployment.

{
//Process p = null;
try
{
   System.Diagnostics.ProcessStartInfo runMe = new System.Diagnostics.ProcessStartInfo();
   runMe.FileName = "WINWORD.EXE";
   System.Diagnostics.Process.Start(runMe);
}
catch (Exception ex)
{
   Response.Write("<script>alert('Microsoft Word is not installed.');</script>");
}
ClientScript.RegisterStartupScript(this.GetType(), this.UniqueID, "window.close();", true);
}