I messed up and deleted my settings folder from the start menu and now I can't get to memory remove programs and all that :( what do I have to do to get it back?
Either a restore from backup (ie. Sprite/SPB etc) or a hard reset will definitely restore it. If either and you've entered PIM data since you'll need to back this up first and restore it last.
There may be an easier way but I don't know of it.