Hi cp
Result of installing Highpoint card: partial success.
The first time I attempted installation (in 2009), I installed the card and switched the original (single) Fujitsu hdd from primary ATA interface to the new card. The result was that booting seemd to be going OK at first, but later stopped. I subsequently found that even if the original configuration was restored (no card, hhd on primary ATA interface), the system would no longer boot and directory structure on the disk seemed to have been corrupted (I can't remember how I came to this last conclusion, this was over a year ago). Hence the reason for reformatting and re-installing Windows 98 etc. Perhaps the MBR had been modified, I might have been able to check now but I knew less then.
This time (2010) I left Fujitsu hdd attached to prim. ATA as master, then 1) installed the 133SB card, with no other disks; 2) booted W98, installed drivers from a CD; 3) restarted; 4) shut down; 5) attached 80GB Seagate disk, jumpered to 32 GB as before; 6) restarted, saw that new drive was detected (only 32GB visible, the size of a primary FAT32 partition created previously); 7) shut down again, moved jumper to CS position; rebooted, ran FDISK and created new extended partition between 32GB and top of drive (size = 44069 MB according to FDISK). The new partition is set as shared in W98 and so can be seen across the network.
Subsequent testing with the free 777833-LAN_SpeedTest.exe showed that disk access speeds from main XP machine across network were better than with old Fujitsu disk, but speed changed as more files were moved around on the new drive. From reading around I suspect this might be a Windows 98 problem with its resources memory management strategy -- W98 doesn't have the same dynamic allocation. So the next move will probably be to seek out Windows 2000 disks and make a comparison.
Best wishes
LOKI1999