Your criminal record is for life but your conviction is now 'spent' and you don't have to declare it when completing application forms for insurance or for most types of employment.
i know that first paragraph doesn't answer your question but it's important to note that you won't have to tell insurers about your conviction when seeking motoring insurance:
http://www.lawontheweb.co.uk/rehabact.htm
Your offence occurred 5 years
after extended tests were introduced but you will not have to take such a test unless the court imposed an order requiring it:
http://www.direct.gov.uk/en/Motoring/DriverLic ensing/EndorsementsAndDisqualifications/DG_402 2520
Information about getting your provisional licence back is here:
http://www.direct.gov.uk/en/Motoring/DriverLic ensing/EndorsementsAndDisqualifications/DG_402 2491
You'll then be able to brush up on your driving skills, under instruction, and then apply to take the
normal theory and practical tests.
Any points on your licence, when you regain it, will no longer be valid for 'totting up' purposes. (They only count for 3 years). As you realise, points for drink-driving remain on a licence for 11 years from the date of conviction (not of the offence):
http://www.direct.gov.uk/en/Motoring/DriverLic ensing/EndorsementsAndDisqualifications/DG_100 22425
Chris