I found some 'collected official updates for Win98SE' on the net - not guarranteed - but allegedly a collected pack of all the actual updates packed into a single install file. Worked for me.

There MAY be other such 'private packs' for later 'out of official support' Windows versions. There are some people who WANT to keep the older versions 'effectively running almost in the Public Domain' - mainly because those versions work on the older HW - and the programs just keep working sufficently without many updates - especially if such boxes are isolated from the hassles of net connections (viruses, etc).