Good to know - there is no "Adobe Reader format".
There is "PDF". PDF is the file format that both Adobe Reader and Acrobat opens.
Adobe Reader cannot create a PDF so you must be using some other application / process to save to PDF.
If the format is DOC, TXT or RTF Wordpad can open it. As PDF is a binary file format if Wordpad "opens" a PDF what is rendered won't be readable.
So, you will need to post back here to this question thread with exactly what application you are using to try to create PDF files. We can go from there eh.