This 7Mb file includes the disks 300sm1.zip (2.13Mb) 300sm2.zip (2.53Mb) 300sm3.zip (0.95Mb) 300sm4.zip (1.22Mb) [Scan Module driver for Windows 3.1x, 95, NT - disks 1,2,3,4] and also
300qp.zip (0.16Mb) [Quick Panel update for TWAIN error]
The huge mazelike Phlips site also offers drivers for the PCA600PS. For win98 drivers see the sm248_1-4.zip files. The 300sm-stuff does NOT work under Win98!