Posting a pic would help tremendously. There are a lot of different types of "curls", and they can all mean something different.
Until then, I would recommend to go and inspect the plant. Look at the top and see if it is putting out new growth. Is it green? Does it look like the curled leaves, or does it look good? If you have new growth (either curled or not) that is a good sign. Next you can start to diagnose the curl. You may want to consider that it is just the fact that the plant has a new home, and may take a week or so to get used to it. I know when I plant out I give all my plants a few weeks to "settle" before I go and start fixing things. A lot can happen in a week, and if you are still getting new growth, you can afford to be patient. If not, and it isn't dieing, you can still afford some time, but get some pics up.
A lot of the time these things just fix themselves, and again, pics can definitely help. There are a hundred threads that were started in the past 3 weeks on Cal-Mag, and I recommend to just give it some time and listen to the plant. If it is telling you I NEED SOMETHING NOW! Then lets get this thing fixed, but if it is just little things, you are better off to let it settle into its new home and then start to supplement.
If you need help with posting photos, get a photobucket account (free and easy), upload the photo, and then click IMG under the 4 code options beneath your photo thumbnail and it will automatically copy the link. Just paste it and you are good to go!