The University of Wyoming offers MS Office Pro Plus (2013 & 2011 for Mac) to enrolled students for free. To install it, login to your Office 365 email account. Next, click on the setting’s gear in the upper right corner and select “Office 365 Settings.” On the left side, select Software. Then click the “Install” button. You can find more details on how to install Office Pro Plus . Windows 8 Ultimate is also available to upgrade your operating system for $26.50 (CD). For anti-virus, students are encouraged to download free Microsoft Security Essentials from the Microsoft website or to use other anti-virus software (free or purchased).