hi lazymary,

a lot of newer computers come with NET 2.0 already, most older ones don't. it is easy to install NET 2.0 and there is a link for it somewhere on this forum, but since I am lazy I googled it and found it can be downloaded from microsoft here:

Click here to download NET 2.0 from Microsoft

once you download and install NET 2.0, the constant gardener should run.

-Borg