every girl i have had sex with (like, all 3...) have been able to orgasm/cum/squirt.
the only "trick" i have had to perform with this is to get on your knees with her on her back, and "aim straight up, not straight in". It also helps to bend her legs back so her knees are near her chest, or as close as possible to her chest without hurting her... and that's pretty much it.
the "g" spot is kinda situated on the other side of the clit, so use your sick to get up at that.
I don't mean to make this sound over-simplified, but it really isnt too hard, you can do it!
also, i posted earlier but i think it needs to be mentioned again:
most girls try to hold back from cumming as they think they are about to urinate - it is at this point they are actually about to squirt, but most don't realise this. Try talking to your girl about this, as my girl used to do the same thing, she would hold back until i told her my last g/f said it felt like she would need to piss when she came. Then my current g/f just let it go, and sure enough, it was orgasm/squirting she was holding back, not pee.
Send me a message/reply to this thread if you need anything explained or more tips...
dopefish