Brenda Studebaker wrote: >Can you format a laptop hard drive that has windows XP on it... >(and) replace it with Windows ME without any problems? Before you reformat the HDD, which will erase all of your files and settings on your daughter-in-law's laptop, you may want to check out Microsoft's website for the following information regarding the removal of the Sasser and Blaster virus. The following link shows the main page regarding the Sasser and Blaster virus.. http://www.microsoft.com/security/incident/sasser.mspx this page is the removal instructions for the Sasser virus... http://www.microsoft.com/security/incident/sasser_printxp.mspx the following is info regarding the Blaster virus... http://www.microsoft.com/security/incident/blast.mspx the following link is the removal tool for the Blaster virus... http://www.microsoft.com/downloads/details.aspx?familyid=e70a0d8b-fe98-493f-ad76-bf673a38b4cf&displaylang=en I would recommend a good, updated AV program, a firewall and all of the critical updates required for her laptop. A free firewall (other than the one provided by XP) is the basic version of ZoneAlarm... http://www.zonelabs.com/store/content/company/products/znalm/freeDownload.jsp I hope that this is helpful. My two cent recommendation is repair of the OS rather than a replace. Chris Ryan [log in to unmask] PCBUILD maintains hundreds of useful files for download visit our download web page at: http://freepctech.com/downloads.shtml