No way in.

[Tinbuk3]

I don't see the problem here really other than some digging for the drivers and putting "old dell drivers " in the search should do the trick.
Procedure will dictate the progress here I think.
First make the disk with the driver/drivers in a separate folder then copy and redo an auto. exe file with an editor to find and execute them/it when the the disk is used on startup.
Obviously it had no problem executing the windows disk on startup right?

ADDED: you can edit the auto exe for the 98 using notepad on a newer PC when preparing the disk.
Simply type the instructions and name the file autoexe.bat.
Creating the file might involve looking it up as well but should still be out there.