I am using an HP Pavilion 4450 (old!) and I just changed out the 6GB hard drive with an 80GB. The 80GB had a previously installed Windows 98 OS and I upgraded it to Windows XP Home. However, apparantly it erased the internet drivers because now the computer does not "see" the internet modem. In the Device Manager under the Other Devices (which has the yellow question mark next to it) there are two drivers listed: PCI Simple Communications Controller, and TI RNDIS Network Adapter, both of which show up as "Not Working." My question is, will XP Service Pack 3 install these drivers? If not, how can I get these drivers? Thanks!