Depends on what you want to do really, but no matter what you will have to get experience.
Obviously if you want to be any kind of a programmer there's no hope, at least not in this decade.
If you want to be an artist it's perfectly fine that you don't have a lot of experience with computers. Learning things like Photoshop and Max take a few weeks but the real meat and potatoes of art are things like life drawing and sculpting and you don't need any computer experience for that.
If you want to go into design (game or level) you don't really need computer experience, just game experience along with a few other key skills that don't necessarily involve computers. The only exception is that you should at least be familiar with Office but that's really it. After learning good design techniques, it just comes down to learning whatever editor you happen to be working in which requires no previous experience.
