I am trying to re install windows for someone who had a rootkit virus. All antirootkit packages I tried would not remove the virus so I decided best to flatten the HDD and start again. The person whose computer it is has not got any discs so I tried using various flavours of XP Pro that I have, but all to no avail as they will not accept the COA even from the machines license (found using belarc) or from the COA sticker. I assume that Fujitsu Siemens use a simular system to DELL where you have to use their own windows discs in order for the COA key to work. Can anyone tell me where I can get a Fujitsu Siemens windows XP Pro disk for this machine?