Raw GI and glycemic load values:
http://www.glycemicindex.com/
More general nutritional info including both:
http://www.nutritiondata.com/
general carb principles (even though you aren't interested, maybe others will be):
- GOOD carbs: fibrous vegetables, whole grain products, fibrous fruits
- BAD carbs: pasta (except whole wheat), white bread / rolls, fruit juices, anything with added sugar or high fructose corn syrup, products that claim to be whole grain but whole grain is not the first ingredient, anything with high "net carbs" (carbs - fiber), fried foods (the breading), candy, chips (there goes about everything in the average vending machine except sesame seeds & plain peanuts)
The only time you need "bad" (simple) carbs is immediately post-workout, in which as almost any sort of simple sugar will do.