The only way I can climax is through intercourse! And I have to be on top. It's more of a forward/back motion. This way he is rubbing aginst my clitoris. Obviously everyone's body is different so try different things to find what works for you (and your partner).
Or maybe a mini body massager to...uh...help you relax. They can do wonders, I hear. Ever been invited to a F.U.N. Party? It's like tupperware or pampered Chef, except the items are more along the lines of relationship-enhancers. Good luck! :)
I agree with Gonza. There are very few women who actually reach climax with intercourse alone. Most women need their clitoris stimulated. Try different positions so your partner can do this for you. Hope it helps.
Do you do anything other than actually intercourse? From what I understand, most women cannot climax by just having intercourse. Most climax by oral sex or "fingering" (for lack of calling it anything else). Try that. I would go into more detail, but I dont feel this is the place to go into detail. Good luck.