The Download-Page says: If you have a license for Visual Assist .NET 7.1 or Visual Assist 6.0, upgrade to Visual Assist X for free. Simply download and install the latest build of Visual Assist X over your existing version. Re-enter your key if necessary. See our upgrade policy for details.
So, upgrading to Visual Assist X is free for all licensed Users... provided the key is legal and none of the blacklisted keys that float through the p2p-networks.
You definitely will not regret switching from VA 6.0 to VA X!
are you a registered user who just needs to reinstall VA 6? if so then email [email protected] with your details and i am sure they will be able to provide you with a copy of the installer.
is there a good reason why you are not able to move to a newer version of windows? win98 runs out of resources on a horribly regular basis, so it is a good idea for this reason alone.