If you want to download updated version on one computer and use it on other machines, Do this :

Resolution Download and install the latest Parallels Desktop 7 update:

1. Download the update: http://www.parallels.com/products/desktop/download/dr/

2. Run the downloaded file and install Parallels Desktop 7.0.15104. Note: only Parallels Desktop application will be reinstalled, no Virtual Machines will be affected.

Courtesy : Parallels Website.

Hope I was helpful :)

If you want to download updated version on one computer and use it on other machines, download and install the latest Parallels Desktop 7 update:

1. Download the update from http://www.parallels.com/products/desktop/download/dr/

2. Run the downloaded file and re-install Parallels Desktop. Note: only Parallels Desktop application will be reinstalled, no Virtual Machines will be affected.