This driver was yaken directly from the original manufacturer. It will work well. I'd like to help others as I, cause I once needed this driver and I didn't find it.
The following files are found inside the driver download file.
|SETUPLIB.DLL||165.9 KB||4 Jan 1999|
|OEMROM.BIN||32.8 KB||30 Apr 1999|
|SIS620.CAT||2 bytes||31 Jul 1998|
|DD620.DLL||10.3 KB||10 May 1999|
|SIS620V.VXD||29.7 KB||14 May 1999|
|DD620_32.DLL||125.4 KB||10 May 1999|
|SIS620V.INF||12.1 KB||14 May 1999|
|SIS620V.DRV||89.5 KB||14 May 1999|