But any ideas on getting into the tower besides lvling my thieving to 46?
Wrong tower. It doesn't require thieving.
It's been a while since I've done this, but here's something to help you:
Hopefully you can recognise the spinning symbol. Its north-west of the flax field, right below the saucepan (range). You go in there and up the stairs.
While I'm here I thought I may aswell post this...
Taken 13th of September 2008.