networktrouble - not clear as to why you can't boot from either the install CD or the 6 boot floppies to start recovery console. Presumably the laptop supports booting from either? The unmountable boot volume is due to the problem with the hard drive - have you been in the bios settings to check its set to boot from CD or floppy before hard drive?
Assuming you do get into recovery console, as well as running chkdsk /p (note to linney - this is equivalent to chkdsk /f from a command prompt, and runs considerably quicker than chkdsk /r), you should run fixmbr and fixboot.
Another approach would be to connect the laptop's hard drive to a PC with an adapter IDE cable. You could then run chkdsk from within windows on the other machine - though given the unmountable boot volume, you might want to run recovery console on that machine and run fixmbr \Device\HardDiskn (where n is laptop's disk id on that machine, starting from 0 - it would be 1 if no other hard drive's) and fixboot x: (where x: is laptop's drive as seen from recovery console) - as well as chkdsk x: /p of course.
Put it back in laptop and see if it boots.