The VU has bought a license for its students, so that we can use ChemOffice at home. Here is a guide on how to install ChemOffice.
Go to: http://sitelicense.cambridgesoft.com/sitelicense.cfm?sid=16
Fill in your student email and hit submit. You will see a pop up with the message:
Press [Continue] and make a (free) Cambridgesoft account by hitting Register.
It is possible you already have a Cambridgesoft acount, since you need it to search more than five times when using www.chemfinder.com.
When you have logged in, you can chose between the PC and Mac version of ChemBioDraw Ultra 12.0
Once you download the right version, you will receive a serial number in your email. This code is valid for a year. After that you can get a new one.