Did you actually mean "SL"5500? If so and you still can't get the packages, I can email them to you. PM me and I'll get them to you.
I am using the SL5500 with ROM 3.10 and rotation works perfectly (have to restart QTopia to get rotation, and then restart to quit rotation). It seems a bit slow on restart, but after rotating, speed seems to be the same while using various apps.
V-Man