I'll be supporting '98 for a while. But the support I can offer is pretty much diddly-squat, as I have no resource for same.
I'm just another Avast user.

I think it is likely that the time frame for withdrawing support for 4.8 ( and by association, '98) will be sometime next year. So he has a few months left, probably.
After that, finding an AV that is still supported that works in '98 resident will be getting pretty tricky, I think.
(Time for a new OS. Or use a different protection strategy.)
Definitely uninstall AVG via the control panel. Reboot. That may do the job. If not, a full uninstall and reinstall from scratch, using the
Avast uninstall utility may be required.
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