There are people out there in high level sport without an ACL at all. The preference for most people is conservative rehab intially. Surgery is only indicated if conservative rehab fails or there is instability.

Your rehab will entail gaining full movement and get rid of any swelling. Once that is done, you start on strength exercises. I can't be too specific on exercises because it is individual to each person. But a basic programme usually involves, squats (both two-legged and singe-leg), going up and down stairs, jumping and hopping. To enable you to run you must be able to hop without pain. The emphasis for the exercises is to be able to control the knee, so that the muscles take over the job of the ACL.

With regard to a physio I would reccommend someone who has done this sort of rehab before.

Hope that helps a little. Any more questions just ask