Try to find where you put the software,if you can't remenber,you can search it.
For your problem,i recommend you to try advanced all to pdf 5.0 or advanced pdf converter,Actually there are many programs can convert to pdf but seldom could preserve the original layouts perfectly.So,many peopel perfer Advanced PDF Converter 6.0,which can preserve the original text contents,layouts,graphics and text hyperlinks after conversion.Converted quality is fairly good,I am using it,and find it is true,hope you enjoy it.
http://www.advancedpdfconverter.com/products/pdfconverter.html

Here is a powerful tool which could convert word/excel to PDF and vice versa.
http://www.nemopdf.com/pdf-converter.html