Thank you for your reply. I think that I got very lucky because only USB 2.0 is left without the driver under Win98SE. Here is my experience with my Intel 915P motherboard (Gigabyte). I have tried Geforce 6200 PCI-E and its driver was very unstable under Win98. nVidia's tech support (after complaining a bit that they do not make video boards) told me to stop using this obsolete operating system. However, two different models of ATI X550 do work properly. They have limited DOS memory to maybe a megabyte or smth, but it is OK. The driver for Realtek ALC codec (integrated) is not stable, but I don't care as I have a good sound card (Yamaha YMF724). Yay, DOS games! VIA VT6410 SATA/RAID controller works properly. I have tried only P-ATA devices (three 250 GB hard drives are connected). Operating of RAID-ed drives in DOS mode is possible, but if writing is attempted it may corrupt the entire disk. Marvell network interface works properly (except, read below). This Windows 98 machine can not operate for more than 4 or 5 days because of some timer problem I have not been able to resolve so far. The system clock slows down, then there appear timing problems in MIDI hardware, then network card (Marvell) wouldn't accept incoming connections, regular digital audio wouldn't play (PCI board). I suspect it's because system timer shares IRQ 0 with an IDE controller, but I'm not sure. There are no observable problems running Win98 for shorter periods of time, like one day.