I use the exact thing
Hey, khan I got the right thing for u. You don't need to install open office at all, though i think it is one of the best office suites. Try cutepdf. It also needs ghost script to be installed before it. It will install as a printer on you machine and all you need to do is choose it as the printer you want to print to in "File>print" and give the print command. Then it will ask where you want to save the pdf file. It is fast, but please keep the document open till it finishes printing or else the last part of the pdf document might get blank on slow systems.
Here are the links
The site: *www.cutepdf.com/Products/CutePDF/writer.asp
Cute pdf: *www.cutepdf.com/Products/CutePDF/writer.asp
Ghostscript: *www.cutepdf.com/download/converter.exe
Hope it helps. If so please give a reply. I would like to get your feedback so that I can assess the usefulness of the software