While installing W2K Pro (daughter's w98 old Asus AV7 machine) I am asked for SP4 floppy which I don't have so I skip. Later it says a dll file related to network can't be found. I click ok. Then after install no optical drive is in device mgr. Of course I can't install more software at that point. I've never had this before so I'm stumped. DVD burner is showing up in bios. No other optical drives installed. Any help would be appreciated.