PCI Ethernet Controller

I have a new dell computer that I had to fdisk & reformat because I had to have WIN98 on it to run some software. I have finally gotten all the drivers loaded however it can’t find the PCI Ethernet Controller. Where is that located? I ended up having to installed an additional 3 com 3C905-TXM nic because the original on the motherboard does not have 98 drivers. Those drivers installed fine, but still can’t find the PCI Ethernet Controller files. HELP!! I first loaded the chipset for this computer from the support.dell.com site without a problem ( I thought that’s where the PCI Ethernet Controller might be – but no)