In losing weight, calories are more important than fat grams. Set a reasonable calorie goal for yourself and then track fat as a percentage of your total intake. Most healthy plans recommend anywhere from 20% to 30% of your daily intake come from fat. As already mentioned, Fitday.com is a great place to track this type of information, I highly recommend it.
If you'd like guidance on what a reasonable calorie allowance might be, check out
www.room42.com.