The pointing device drivers should be on the resource disk; drivers downloads, that you should have on-hand, prior to re-installing, if the generic drivers do not work, a standard USB 101 keyboard and mouse plugged into the back of the laptop might give you control of the computer untill you get the support software needed to finish the install; keyboard/touchpad, pointer stick drivers installed.

Install discs for Internal Devices? These are the drivers that Judy was saying to enter your service tag for and download from dell.com probly support, downloads software "drivers" for the hardware inside your laptop "ethernet controler, mainboard/chipset drivers/ onboard video drivers" "sound card/chip drivers" or any add-on peripheral, pcmcia network adapter, firewire controller etc.