I suggest walking also. If you can't go outside and walk, Leslie Sansone has dvds for walking workouts in your home. Dancing is fun too!
Check your local library to see if they have exercise dvds.
You can do strength stuff at home with dumbbells or resistance bands. Check the library for books/dvds for that also. Or what about yoga? My library seems to have a lot of yoga dvds.
You can also find workouts online on youtube, hulu, exercisetv.tv
Just get moving!!