So What I did was made a file with all the different dimension styles and sizes that i normally use. It works great for new drawings because I can just drag in the whole set through the DesignCentre and then there's a bunch of dimension styles to choose from.
What I'm trying to figure out is if, say for example all the dimensions need to have their justification set to below instead of above line or something, the 'Dimension Style Manager' only lets you edit one at a time... So for something like that I thought there might be a way to edit multiple dimesion styles all at once (instead of just changing the properties and saving as a new style)