Please don't open multiple threads for the same issue. If you didn't get replies to your earlier post, it's probably because your answers to the questions were confusing or incomplete and nobody knew how to help you further. And, in general, these forums are for volunteer help from your peers. If you require real support from CodeWeavers, you must use our ticket system.
You say you're running Ubuntu "inside vista Ultimate". You mean you're running Ubuntu within a virtual machine that's hosted by Microsoft Windows Vista? That's a bit of an odd setup. Also, given that you're running Windows, why are you trying to install CrossOver? Usually, CrossOver is for users who aren't running Windows.
Also, you were asked which variant of the CrossOver installer you downloaded. Our website offers a Generic Installer which ends in .sh, an installer for Red Hat, Fedora, Mandriva, or SUSE which ends in .rpm, or two installers (32- or 64-bit) for Debian and Ubuntu which end in .deb. Which did you download?
In which environment, Windows or Ubuntu, are you double-clicking it? Windows won't know what to do with any of those types of files. Ubuntu ought to handle .deb files in a sensible fashion. It may handle .sh files, although you may need to open a terminal or shell window and type "sh /path/to/install-crossover-standard-8.0.0.sh" (you'll have to specify the real path instead of "/path/to", of course).