FDISK,FORMAT,INSTALL

I got a big time problem on my hands and I been trying and trying all night and few hours today. I got Dell OptiPlex GX1 Pentium II 350MHz 128MB RAM,4GB-Hard drive,CD-ROM: Yes (speed unknown),Floppy,Ports: Parallel, Dual 9 Pin Serial, PS/2, 2 USB, VGA, Network Interface(Ethernet), and Sound ,Model: DCM.

My partition is active and it says from the fdisk/status 100% useage I done that right and formated it right. Now unable to get this to start installing new windows 98 second edition.

It says Device driver not found ‘OEMCD001’
NO Valid CDROM device driver selected, Now what do I do, Ramdrive keeps loading on dos screen D so my cdrom drive is d or e still nothing. Yes I got 2 boot disk one I made from this computer and the other whichcame with windows 98 se box.