I just bought a new PC to replace my old P2-400. The P2-400 was running Win 98 and it had been acting funny for many months. I think that if I wipe out the hard drive and re-install an operating system, I'll have a perfectly functioning PC. I already have both Win 98 and ME disks that I can use. Should I use one of these or spend $100 for an XP Home Upgrade? I already have an XP laptop and now an XP desktop on a home network.