QUOTE(anakrron @ Nov 7 2005, 07:38 AM)
I've been told I have to strengthen my fingers too... I still can't play trills and stuff with my 4/5th fingers, which is pretty bad....

I wouldn't worry, I can't even do them with my 2nd and 3rd fingers.
QUOTE(nannyjay @ Nov 7 2005, 01:18 PM)
With your hand in a relaxed, piano playing positing, hold down all fingers on the desk, then with each finger separately lift and tap several times. All the other fingers must still be resting on the surface of the desk. Once that is easily done, try doing it with adjacent fingers (one after the other), still holding the other fingers down. Then, when that is easy, try fingers 1 and 3, 2 and 4, 3 and 5 (not all together, you understand), one pair at a time. This exercise is really useful and I still do it quite regularly.

Tapping 3 and 5th together several times without lifting the other fingers is really difficult, especially without looking!