Q: installing paralells 6.0 over 5.0 as an upgradewill I lose my windows installation?

If I install the newer parallels 6.0 as an upgrade to the 5.0 I have installed on my mac now, will I lose my current windows installations that I have under 5.0?

I would like to know as I received an e-mail with a price of 49.99 to get 6.0 & some mac apps, it claimed it was a big value, they have given me until 7-31-2011.