Google Calender Sync

I'm using Google calendar to take my calendar with me and google have done a good job for this.

Is it possible to install Google sync to and run from a USB stick without changing anything on the host computer? The challenge is that my employer doesn't allow installing software so I use portable applications. Does it need to be really open source in order to make a portable version? If not, anyone know what has been done on the host PC and can we have all those dll's..etc. put into the same directory for execution without installation?

Many thanks in advance and keep up the good work!