I have an IMAC 333,I think 6 gig hard drive,96 megs of RAM,running 9.2. I use my machine mostly for e mail,surfing the web and chat. I really don't want to spend a bundle for a new machine in order to use the new Operating system. Can my IMAC be upgraded to the point I could up grade to the new operating system? If I thought I could do it for about four hundred I would serioulsy consider it. Thanks.