If any one has ran into this you will know that nothing can clean this troan bar a totally reinstall, nod32, spyware doctor, mailwares, they detected it but fail to remove it proper, a reboot and its back. I followed the advice in one forum and placed the laptop sata drive into a desktop and booted off an independant windows xp installation which had a fully working nod32 anti virus install. A full deep scan (full scan) was ran against the drive which was detected as E: in the desktop. These are the results. Hopefully this may helpsome one else. The drive was later returned to its orginal destination and a repeat scan was completed with no memory resident troans detected.
I would have thought Disable Bit technology in the bios would have stopped dodgy memory address extensions like that.