Sorry if these are two stupid questions but: 1. does the trackpad on either the iBook or the pBook work as a mouse button? (i.e. can you set it up so if you tap it twice it works like double click) 2. I noticed on a quick demo I just had that the trackpad moved quite slowly and then accelerated. Is this the only way it operates or can it be set to move swiftly immediately. Thanks for any input.