What you have is more than likely dysplasia. Which is caused by the hpv virus. Your doctor did a colposcopy and biopsy to make sure the pap smear was telling the whole story (pap smears are only used to checking to see if something is wrong. They are not used for diagnosing anything.). The colposcopy/biopsy must have confirmed there were dysplastic cells - although it sounds as if they must have been low grade. Or else they'd have done another procedure to remove them.

You can search the internet for the term hpv and find a lot of resources and information. There are many different strains of hpv, the lesser variety cause warts, the high risk variety can cause cell changes on the cervix (which can, if not caught, cause cancer. However that takes a very long time.). There is no cure for hpv, so you doctor wouldn't have a treatment for that.

Keep up on your pap smears every 4 months like your doctor recommends. Hpv and low grade dysplasia can clear on it's own. Don't smoke and make sure to take vitamins every day.

Good luck!