1997,
your best bet is to contact a motor loss adjuster to act on you behalf who will deal with the insurance companies involved directly, this should have been done asap if you thought the car was a write off but try anyway, you'll find them on the net or goldenpages depending on where you live.
their fee is a % of the overall claim... i have used one for both home and car insurance claims and would highly recommend it, as insurance companies tend to fob off claimaints but seem to deal with insurance professionals more easily.
Also contact your solicitor to let them know what is going on...
best of luck,