You can take them orally and put them on cervix directly... if you can reach or have a willing partner who fancies doing some gentle cervical massage.
I'd take 1000mg morn and night and do the massage once a day, best last thing at night so oil stays put. You can actually just put a capsule in your fango and it will eventually disolve but in my experience its better to put just oil up there (less to come back out!)
Prostoglandins (found in sperm and EPO) are given orally for induction in some countries. I can't find the article I was looking for, but here's a random study in which the Prostoglandin containg drug was given orally. Another random study here.
You're supposed to do both but I always worry about introducing and infection so tend to stick to taking them orally.
I think in America they do give tablets to start labour but I might be wrong.
You could also try some raspberry leaf tea or tablets. Raspberry leaf is a uterine tonic that makes contractions more efficient so will help in the second stage of labour and might strenghten your braxton hicks to help get your cervix ready.
Check out homebirth.org for info on using EPO and other natural induction methods.
In the uk it is given vaginally. Are these studies actually comparing oral administration and vaginal? i mean if it works better orally then i'm all for doing my own private controlled study tonight but i'd have to see some pretty good evidence to swallow that one!
Also, try bouncing on a gym/birthing ball in front on the telly tonight.
I sat on the ball the other night as my hips/back were aching. DS 21 months came over and sat on his football and we had a mad half hour bouncing away and laughing like crazy. Later that evening. I had two huge shows and some niggly cramps.
Mentioned it to the MW, who gave me a really telling off as I've had preterm labour, have a softened dilated cervix and am supposed to rest. Seems that all the bouncing has made it progress even further.. not good news for me at 34 weeks but would be great for you.
Know what I'll be doing in a few weeks to shift this child though