CG,
Sorry to hear that, but it can be manageable.
Diabetes also 'runs in my family'. I have the kind that requires no drugs, as does my dad.
Controlling the blood sugar is the most important thing - too much carbs at one time will cause a sugar rush, putting you into a blood sugar crisis. Protein is safer than carbs - I have found that learning to cook high-protein low carb meals is most helpful.
For example, beans are an excellent source of protein - refried beans, hummus, and tofu are really good sources and easy to cook. Guacomole (I know it's a fruit, but low sugar and high fat - gives your system a rest from dealing with the sugar) makes an excellent snacks (ie, meal since I snack at least 5 times per day). Add with that small portions of carbs - rice, potatoe (sp? a la Quail). Add in some veg with the carbs - a small amount of rice for example 1/4 cup with 1/2 cup of broccoli - that way your blood sugar doesn't rise too much and you get good nutrients with the carbs as well as a bit of fat with the butter on your broccoli (yum). Eat proteins separate from the carbs - learn to regulate your blood sugar naturally.
Fruits are tricky - you have to watch the sugar content. Although they contain a lot of good minerals and vitamins, they are often high in fructose, which give a quick sugar rush (dangerous). Suggested reading: Jane Brody's Guide to Nutrition (an old book from the 80's but good info).
Also, if you smoke you must take this into consideration since smoking changes your insulin levels in a strange way that I can't quite grasp.
If you are an insulin diabetic, the rules change - it's a different ball game that I am not familiar with and I would suggest seeking the help of a nutritionist and other health professionals.
The main purpose is to 'manage' your illness, and take it seriously. Learn to enjoy your choices, rather than fight the limitations of your diet.
Good luck with it!
talesin