OS help needed please

Seems Windows 98 has got a few mentions on the list of late - must have just come into the "classic era". A while ago a good friend approached me as he wanted to get an old game up and running that he really likes - Recoil (might ring a bell with a few list folk) - wants the real experience, not the VM experience. I'd be happy to help him out anyway but he has thrown a few old machines at me from time to time rather than see them go to the tip so he definitely gets help. The game is quite particular and will only run on Win 98. I've resurrected a HP e-Vectra that I have (very nice little machine by the way) that has a serial on it for Win 98 SE but I really need the "actual" HP Recovery media for it as I'm having some dramas getting the right video and sound drivers for it. I've struck out at HP and have tried a few vendors that still list parts for this machine but no joy. Be most grateful if someone can help me out or point me somewhere please. Thank you!!! ++++++++++ Kevin Parker ++++++++++