The thing is, Edd, it wouldn't even allow me to do that. The virus had somehow managed to change the command prompt from "C" to "X" i.e. X:\Windows\System32> and as a result wouldn't accept commands such as msconfig. Believe me, I spent the whole night searching the Internet for a solution and must have tried practically every one of them to no avail. Like I said, it was just by chance that I hit the CTRL+ALT+DEL keys after reading someone else had used this method and Voila! it worked!
Admittedly, there are one or two problems remaining, such as the laptop for some reason, will not install the latest Windows Updates (again I've tried just about everything). I have no idea if this is virus-related or a completely separate issue, but would be interested to know if anybody else is experiencing this after ridding their computer of the Ukash/Met Police virus.