I second the recommendations for
www.fitday.com and a personal trainer, however, if you can't afford a personal trainer, there's a pretty good workout program called Homegrown Muscle over on
www.menshealth.com that doesn't take much time to do, and is pretty damned effective. I'd recommend taking a look for it. It's multi-stage (each stage lasts a few weeks, the entire thing lasts one year). The first stage is the Iron Manual, I believe it's 8 weeks long, and it provides a lot of good general exercises focused on toning and building a good foundation for the later, more specific phases.