I have a old 486 computer and i have just acquired a new hard drive and disposed of the old one.this new hard drive is 580mg and it has win 98 installed on it,when i pluged it in i tried to modify the type of hard drive in bios but there wasn't one the right size.what can i do because the only thing i can acess is the bios which is a very old version.please please help,thanks alot Ryan