Al, is it a DT125MX?
few and far between, ebay is your best chance but be prepared to pay good money.
an Intro is the way to go for new members, we have a 'Noobs' forum, you can even post a pic of your pride and joy there.
EDit, didnt read the title properly. a mk1 LC
as Dirty DT has found you one, ebay still an option but maybe best to buy the new one?