Hi, Demetri... > In autoexec.bat lines below "rem" was added when I reinstalled Windows98. > Should I leave "rem", or restore CD-ROM manufacturer's modification? > You can just leave it there or delete it... this is done by the setup of windows, because windows needs a cdrom player first to installl windows, after that windows 9x will detect the cdrom player itself and install the good drivers for them, therefor disableing these in the autoexec.bat and config.sys -- Anne Meinema [log in to unmask] www.clockspeeding.cjb.net or www.clockspeeds.com Site Description/Sections : Formula 1, Delta Force, Overclocking and More The NOSPIN Group is now offering Free PC Tech support at our newest website: http://freepctech.com