We have an IBM thinkpad 600E. Somone tried to install XP and it will not work right. We are trying to put WIN 98 (which was originally on there) back on and we cannot get it to install. Can we do this? We tried to re-format the c drive, but does not allow. It told us to install in DOS mode, but we cannot get to DOS mode on the laptop. Can someone tell us how we can get XP off the system? Thanks.