Changing the encryption key?

[Brandon Laing]

Hey list,

I am currently running VNC on a number if different systems, both 
Windows based and Linux based. As many of these systems contain 
sensitive data, I'm looking to make them as secure as possible, while 
still keeping VNC on them. Now, from what I've read, VNC uses the same 
key to encrypt all passwords, and that this key is easily obtainable, 
making it relatively easy to decrypt the password if someone happens to 
somehow get onto the box or gain control of it remotely. Now, I know 
that at that point it's probably too late. But, as this came up as a 
vulnerability in a recent security audit, I'd really like to find out if 
it's possible to change the private key that VNC uses to encrypt it's 
passwords. If it is, I'll change the key and re-do all my passwords. 
Trouble is... I haven't had any luck finding out how to do this. Can 
anyone enlighten me on this? Ideally, I'd like to do it to all machines 
and both platforms.

Thank you,
Brandon