YAYYYY! Good for you. If you can just hop on there a few times a week to start, it will become a habit and hopefully then you'll feel like increasing time or days.
A few tips that helped me:
1. Make your treadmill area as pleasant as possible to make you want to spend time there. Put a TV in there, put motivational pictures nearby, put it by a nice window for light and breeze (or get a fan), etc.
2. Good music - I made some custom treadmill workout playlists for myself in iTunes using music I already owned, and that has helped me a lot! I've created about 6 or 7 different playlists for different moods: Hip Hop, Indie, all Mumford & Sons (my fave band), GirlPower, PopPower, Old School 80's, etc. Each playlist is 30-34 minutes and I even timed the beats per minute (BPM) to start slower, get fast in the middle for most of the workout, and then the last song is slower for cool down and stretching. Some of the songs I put in the faster sections even motivate me to jog for a minute or two, which is really a feat for me!
Keep it up, girl!