There's an alternative to using Microsoft Office Project. Try OpenProj. OpenProj is free !
Excerpt from OpenProj site.
"OpenProj is a free, open source desktop alternative to Microsoft Project. OpenProj has been downloaded over 500,000 times in over 142 countries and has quickly become one of the most popular open source applications. If you are managing a group project we recommend Project-ON-Demand. If you want a free replacement to commercial desktop software, then OpenProj is perfect. OpenProj is also now included with Star Office in Europe. It's available on Linux, Unix, Mac or Windows, and it's free."
Click here to download.