How to convert a Word to a PDF document

[Corvus]

I know its simple per se, you just have to download the appropriate software.
But I tried it and it occured that major things changed regarding format, which is absolutly not intended.
How can I avoid this?

[KrashNick]

Take a look at this

http://www.wikihow.com/Convert-a-Microsoft-Word-Document-to-PDF-Format

[Anglojew]

Just save it on word using the menu to select PDF in save as option, its easy.