Update to WordPress 3.0

Should I update my blog to WordPress 3.0? I really want a new look for my blog but most of the available themes today are compatible only with the latest version of WordPress. I just saw this Basic theme from Elegant Themes and I think it’s perfect. Its layout is more or less similar with my current theme. The web design is simple, classic and there are different colors to choose from. It’s just disappointing because it wouldn’t work in version 2.5. I spent sleepless nights just trying to make it work – couldn’t count how many times I downloaded the theme and uploaded it to my FTP. I really had a hard time uploading the files because I’m officially blocked from my CPanel. The technical support told me my IP is not blocked but he’s lying. I couldn’t log on. I think they’re already pissed off with me because I asked for a password reset a hundred times already. So, now I have no choice but to use Filezilla. Anyway, I’m not sure if I could update my WordPress version by myself. I’m scared that I’ll just ruin everything. The instructions are complicated. I wish there is a better way to update to the recent version of WordPress.