I have acl 2005 deluxe and want to install it on my new machine but it doesn't seem compatible with Vista. Is there an online download or do I have to buy a new version?
I'm afraid for version 2005, this is going to be a no-go. The program is just too old. Check the Magix website for version 15 of Cleaning Lab. This will work fine on Vista.
Maybe you can get a patch. I don´t know if Magix has a patch online for this old version, but you can take a look at the magix support site. Every patch you can get for the program are shown there.