You will not be able to get there IP address UNLESS they send you an email and can't you block that person on the web site or ignore them.

you would have to go to the dell web site to get the drivers for the touch pad. there is no configuration for it in windows. only when the drivers are installed

if want user to to be able to save file you should create directories for each user and give access then create limits on them ( so they dont eat up the hdd)