Got to install VPN for Barney. As soon as The client software was installed the System showed a blue screen and shut down. I shut down the system and reboot it in the safe mode and then pick the last best configuration. This let me get the system back to position without VPN installed on it. On refering with Alan I was supposed to try installing the VPN in safe mode using networking. The system tends to use the minimum drivers required in the the safe mode. Installed and logged back in as the administrator. The problem still persisted. The last option was to back up the hard drive and format it. Now installed the VPN first of all and configured the rest of the machine. IT WORKED.
Heather logged a call that her desktop toolbar disapeared all of a sudden. On having a look for "toolbar disapeared in windows XP" in google I managed to find that the registery has been corrupted by some kind of malware or adware. Using tweaks I had to edit the registery of the operating system and rectify the problem.