I had that same problem years ago.
Turned out the only way to go back to 98 was to totally reformat the HDD and reinstall from scratch.
Its a bummer but I think it is the only way to do it
(esconder) Se, de repente, o site aparecer numa língua diferente, basta clicar na bandeira da sua língua e tudo voltará ao normal. (pauloaguia) (mostrar todas as dicas)