I've been induced with both mine. With DS at two weeks over, and with DD at term (because DS had been HUGE and they wanted to avoid having another really big baby)and although labour does start quickly into bad pains if you are 'ready' to set off it doesn't always happen that way. With DD I wasn't ready to give birth and was induced 4 times before I dilated enough to have my waters broken to get things going, after that pains were quite strong (and assisted by a drip), but length of labour not too long really.
I'm not sure I would advise a c-section instead of induction though. Several friends have had them second time round and found that the pain afterwards, plus having a little baby and a toddler (or two!) to cope with, and the fact that it is major abdoninal surgery after all, has made the first few weeks at home really difficult.
For me I was home with DD within 10 hours and fit as a flea, in fact to midwife had to stop me doing so much because I just didn't feel like I'd had a baby!!
Basically induction is the insertion of a gel pessary as high up towards your cervix as possible, then they monitor you and the baby to see how you both cope, if it sets you off they let you carry on, if not they will do another pessary. then you'll proceed as if you started off naturally, and you can have as natural a birth as you want. they may use syntocinon if you need it to speed things up a bit (ie contracting but not dilating) in which case you will be very closely monitored, but I would have thought that they'd take good care of you anyway of you've had a previous difficult birth.
Sorry to ramble on - got carried away. Hope it helps and let me know if i can say (even) more!!