Thanks for that shah. That is the sort of thing I was after, however there are two problems. First there doesn't seem to be a version of Bestcrypt for download and second because I'm on dial-up it would be a great hassle to download the three apps I want every time I boot knoppix. Unless there is a way to make the download from klik reside permanently on a hard drive and point klik to this as the 'download site' during future installations.

More generally if I try to install an app and it fails because it tries to write to the CD, is it not possible to redirect the installation of the app to a folder on the ramdisk? I would think that this is possible but I am a bit of a newb so don't really know.

Thanks for you help.