I have Toshiba Sattelite 5200 running on XP HE, SP2. Turned it on this morning and following message appeared on black screen.

"Windows\system32\config\ sytem file is corrupt or missing, sellect r after booting with recovery disk."

Unfortunatelly 3 Toshiba disks I have not doing anything.
They are:
1)Product recovery CD(2)
2)Tools and utilities CD

Product recovery CD giving me two choices.
a) reload windows(which I loose everything)
b) for expert use

I have no idea what to do?

Help would be more than appriciated.