Can you tell me what will happen to the teachers plans from last year, will they be lost when we do the down load for 2010?

When you install Guru 2010, by default it will try and install into a users home directory which will make backup easier.

In the past Guru 2005 to 2009 installed into c:\Program files\Guru Planner 200x\
Where 'x' is the year eg Guru Planner 2009

So to answer your question, that data will still be on the computer after you install Guru 2010. However, it is always good practice to have a backup of that data. And for archive purposes I would suggest you copy the whole Guru Planner folder of previous years to a safe, secure place on a school server.

Lastly, you can always print out the whole 40 or 41 weeks of workplans. Just got to the first Guru screen and towards the bottom you will see a button which says "Print All Work Plan Weeks" . Just click on it. You can also "print to file" to if you have cute pdf writer or similar software installed.