[MandaBella]

Go to your USER CP, in the red navigator bar above. Then go into your Edit Options. Scroll down until you see Default Thread Subscription Mode. There is a drop down box there, click what option you want and save.

I have emails disabled this way, but I am still subscribed. This means I don't receive email replies, but when I look in my user cp I can still follow my subscribed threads.

Also (forgot this part...d'oh!) within your User CP, you'll see Subscribed Threads. If you click on there, you can edit your subscriptions to threads as well.