Thanks for your request. As I can see you are using Aspose.Pdf. Please see the following code which will allow you converting any MS Word document to PDF using Aspose.Words:
Document doc = new Document("C:\\Temp\\in.doc");
Also please follow this link to learn more:
If you will have any additional questions related to Aspose.Pdf product you can write to the appropriate forum and my colleagues from Aspose.Pdf team will answer you shortly.