It isnt a problem with windows 98 that your scene doesnt work properly, it is a memory problem. 128 megabytes of memory just isnt enough nowadays, though memory chips are a lot cheaper now to buy so maybe you could buy more memory? I only have 128 megabytes and I cant afford to buy a new memory chip, but it seems like that would be the best way to fix it, or else buy a newer version of that rubbishy mess they call windows...