PDF Creator is a free PDF printer, viewer and editor for the Windows 2000, XP, Vista and 7 operating systems. PDF Creator can be used to merge two or more PDF files into a single file, which can then be saved or printed.
Download PDF Creator from PDF Forge and install it onto your computer. Double-click the downloaded EXE file to launch the installation wizard.
Double-click on one of the two PDF files you want to merge; it will be opened with the default PDF application installed on your computer.
Press "Ctrl" and "P" to open the print dialogue. Scroll through the list of printers installed on your computer. Select the printer called "PDFCreator," then click "Print." A dialogue box will appear prompting you to fill in information about your PDF, such as "Author" and "Date." Enter the information, then press the button titled "Waiting." The PDF document will be loaded into the PDF Creator queue.
Repeat the previous step with the second PDF you want to merge with the first PDF.
Click "Documents" on the PDF Creator application, then press "Print." Choose "Save File," then enter a title for the document and click "Print" once again. The two files will be merged together and saved as a single PDF file.