I called 789 this afternoon and got straight through to the mobile team. They were very helpful too. Sorted my number port and account issues in a few minutes (even called me back when they said they would too).
The reason I am posting is, the operator mentioned that the password to register for a Virgin Mobile account is the same as the one you created when setting up your initial Virgin account (broadband, TV, whatever...) but ALL IN CAPITAL LETTERS!!! Hopefully this little bit of information will help someone else set up an account without the headache I had. I managed fine after I was told this.
Todays experience has restored a bit of my faith in Virgin. I hope the engineer can sort my install out as easily on Monday, I don't want to spend another 2 hours on the phone trying to sort that out again!
Virgin Media support could learn a thing or two from their Mobile colleagues!!