I use PureSecure and like it very much. The only thing to keep in mind is that you access it by accessing an exe file through explorer and ISS (on win2k). This means that you have to be pretty careful. In particular, if you are running URLScan on that computer you can't block exe's as a class because URLScan isn't smart enough to allow a particular exe and no other. Depending on where you want to install it and the overall architecture of your net you can leave a modest hole if you don't think about it carefully.