I am encountering a frustrating situation when I try to install PDN (for the first time). I can download the file - either the .4 or the beta .5 version. I've tried "open" and "save" for both. When I double click on the downloaded file, it opens a permission box - I click "continue," and a dialogue box pops up showing the progress. About 90% in, the dialogue box simply disappears. A moment later, a new dialogue box pops up for an instant, but also disappears (so quickly I cannot read any text, if there is any. I THINK it looks blank).
I have the .net framework - both 3.5 SP1 and 4.0 (each installed the first time I double clicked on the PDN installer). I have gone through and restored/repaired both.
I am operating on Vista, 64 bit. I am logged in as the administrator.
Am I missing something here? (please speak in very VERY plain English, I am fairly computer illiterate)