You can get back to the 'attributes' window (the dialog box you mentioned), here's how:

On the far right, there's an area for attributes. In that menu, you can edit the name & description by clicking 'edit'.

Make sure you're in the parts editor, though!

hey I really need to know how you could make one clip with 2 filters, meaning by that can you tell me how to make a fast clip to a slow clip then to a fast clip (but in just one clip, if you get it)